You're comparing apples and oranges. None of the examples you listed (Gmail, Wordpress, Electron, Android) have draconian resource constraints, and developers

You're comparing apples and oranges. None of the examples you listed (Gmail, Wordpress, Electron, Android) have draconian resource constraints, and developers put a heavy emphasis on shipping new features and ease-of-use. The cost of customers lost due to resource bloat is far lower than engineer hours put into optimization - the reality is that customers simply do not care. For niches that are still constrained, the "quality" you are reffering to is called "efficiency" and it didn't go anywhere since the 80s (in fact it improved due to superior tooling) I've worked in embedded where I had to come up with ways to shave bytes and kilobytes, now I work in web development and I absolutely don't care about performance. My server costs me 15 bucks a month, I can double it 5 more times before optimization becomes remotely profitable for me.