Your friends who studied math cannot make money with their inventions either, and your inventions are really _a lot_ like math.

Since when is a patent required to make money off software?

That's not making money off software. That's making money off software AND business efforts.

And you want to make money off software AND patent efforts.

So, again, why do you think the patent is the driving factor to making money off software?

I've never seen any software worth patenting unlike with other disciplines, maybe it would help the case for software patents if they would be a need for it

I don't see why if someone invents a clever way to perform e.g. fluid dynamics simulations in software, that can't be patented just like in other disciplines.

Not all software is just shopping baskets, and website glue logic.