A person who works for 1 year for $100 income, then stops working the 2nd year (and live off their income from the 1st year), must pay their taxes at the $100 rate. If they are allowed the same 'carry forward' as a corp, they should pay at the tax rate of $50 for both years, rather than at $100 for the first year, and $0 at the 2nd year. And yet, this isn't allowed for a person. Of course, you could claim that the gov't can't tell that the first $100 is supposed to be 'averaged out' in the future. So would the situation be any different if you lived off savings for the first year, and replenished them in the 2nd year? I don't think this is any different.
Unless of course the company manufacturing the widgets (A) sells them to a wholly owned subsidiary (B) for a loss...then A can take the deduction.
Are you an accountant/CPA or attorney?
In lieu of penciling you a tax treatise, you may Google “wholly owned subsidiary tax strategies“. While there are no shortage of tax benefits, inevitably one of the elementary examples you find towards the top will be segregation of manufacturing and sales entities. Unfortunately you likely will not find much on more nuanced situations for example Wholly owned IC-Discs or LOB for wholly owned foreign entities (in many instances those situations can result in 0% US withholding and tax rates)
If most people feeling their way through this problem got their way, they'd simply destroy businesses entirely. They wouldn't necessarily mean to, and only a handful of people would actually appreciate that as a result, with even fewer of those would appreciate it after ten years of experiencing it, but it would be the result.
This is a thing that has happened, and can be studied in history, and is actually happening in the world right now; countries have destroyed their entire business base for good, feel-worthy reasons. Generally speaking, most people have not liked the results. It is not a thing that is beyond the pale, or impossible to happen, or can't happen here, so it's worth encouraging people to be more careful than just feeling.
(This is more opinion than the above, but I don't really believe in the existence of "businesses that aren't taxed", because the business is non-trivially responsible for all of the income tax their employees generate, and directly pay Social Security, health care taxes, sales tax on all the things they buy, and so on. It isn't really the case that there are companies that reach the end of their fiscal year and not a single dollar was "paid in taxes". All it is is that they aren't necessarily paying income taxes, one particular tax, in a field full of lots and lots of taxes. The idea that "companies aren't being taxed" is a lot of rhetoric, which isn't intrinsically a problem, but it can be very misleading and lead to emotions not well-calibrated with reality. By this standard, there's actually a lot of Americans who "don't pay taxes" too, which really makes it all seem a great deal less unfair, and even pay negative taxes, but they still pay various taxes even so, because income is only one taxation element.)
That is not a loss. That is an exchange of value; you pay $100 for your heating bill and receive $100 of heating.
A loss is when you have some value, and it disappears, and you have no compensating value. Buying a stock at $100 and selling it at $50 is a transaction in which you have less money at the end than you had at the beginning, and where you also had no compensating value exchange
Normal taxpayers do have rights to do things like carry forward losses in many circumstances. Business do get to be not taxed on expenses, but there are conditions on that. You can tell there are conditions on that because you can't just form an LLC and declare all your expenses to be losses, because you won't meet the conditions for your expenses to be losses. Note that that is the source of the problem, "form an LLC" is something you can totally do very easily, it's the failure for your personal expenses to qualify that is the problem.
While it might be emotionally satisfying to tax businesses on expenses, it's not hard to think about it a bit and realize why letting taxpayers deduct all their expenses, or trying to tax businesses on their expenses even when they didn't make a profit, are both not great ideas. (Think about the incentives created. Taxpayers don't need any more incentives to spend all their money on "expenses" as it is, if you've seen the credit card debt statistics.)