Optimizing is a different item, it reduces costs... More profit, better costs for customers, potentially undercut other companies with prices that are not feasible / offer more features.
Now they are niche when these issues do matter...
One wants to get things done to the exclusion of all else. Possibly trapping you into a corner if you need to ever scale.
And the other wants to “do it the right way from day one“. An undertaking that would cost more than a small business could ever hope to afford or slowing you down giving rivals time to catch up.
Doing it right, to me, means hiring people who can adapt to changing conditions and needs, and who can make (or help you make) the right trade offs when you have to balance faster time-to-market (which can involve cutting corners) against avoiding technical debt.
The team that lives inside IntelliJ and can't do anything outside it is not going to do that for you.
Well, we’re only discussing a specific dimension of software development here. In reality there are a whole bunch of things not even related to software that will cause problems.
With this myopic attitude you'll get your business up and off the ground fast. Good job.
Then you will be mercilessly hacked.
Once you rename your startup to avoid the negative publicity, you'll hit a performance wall.
You'll lose customer data (and the associated customers) while you try to figure out what the four letters in ACID actually mean.
AWS will take 80% of your profits.
A different company will have taken their time, done it properly, and eat your lunch. They'll take the customers that lost data, as well as the customers that couldn't stand your slow-ass website.
Then they will mercilessly undercut you, because they're not scaling to infinity to compensate for an O(n^3) algorithm being used to scan database tables in their entirety by Mr I Know How to Bang Out Code.