No, it's really not even arguable. Lots and lots of software is written in business contexts where the cost of developing reliable code is a lot more important

No, it's really not even arguable. Lots and lots of software is written in business contexts where the cost of developing reliable code is a lot more important than its performance. Not everything is a commercial product aimed at a wide audience. What you're "sick of" is mostly irrelevant unless you represent a market that is willing to pay more for a more efficient product. I use commercial apps every day that clearly could work a lot better than they do. But... would I pay a lot for that? No. They are too small a factor in my workday. Saving money is part of engineering too.