The idea isn't that nobody ever tries, it's that the typical amount of trying is really bad.
While it would be nice if everything was optimized, it's really not comparable to a meal tasting good, since that's basically the main reason to have a meal in the first place. Most people don't care about bundle size, especially when it's tens of megabytes versus gigabytes.
> the typical amount of trying is really bad
Again, we really have no way of measuring just how bad it could be. IMO it feels like everything could be way, way worse.
This much space is a pretty big cost. It represents wasted dollars, or shuffling data, or not getting it downloaded in time, or not having room for the pictures you want, etc.
> Again, we really have no way of measuring just how bad it could be.
If five minutes did this much, and this is within a couple orders of magnitude of typical, then we can conclude that the typical effort is really bad.
How much worse it could be might be an interesting thought experiment, but doesn't affect the above conclusion.
It could probably get almost infinitely bad if there was zero cleanup effort. But that's the difference between 1/10 effort and 2/10 effort. If I'm demanding 6/10 effort for a professional product, the difference between 1/10 and 2/10 doesn't matter to me.
This is not a case of "I have plenty of water so let the kids splash some in the playground to have fun", this is a case of "I have plenty of water so I will load 10000 liters in a truck and drive 1000 kilometers and back just to dump them in the desert for no fucking reason".
Seriously, 5 minutes? I spend more than that in the bathroom. How many 5-minutes is a "Scrum standup"? a "progress meeting" ? a <insert bullshit corporate activity here>? Do all of those things not waste the engineers' time?
I'm trying to imagine the world if every profession and craft tried to justify this disgustingly irresponsible mindset :
" - This combustion engine uses an inferior injection mechanism that wastes 40% more fuel compared to latest...
= Don't waste my time!!! I have more important things to worry about.
-.... It would take 5 minutes to fix
= Customers don't notice the fuel consumption anyway, so that means robbing them out of money with inferior engineering is okay. Now hurry up, we'll miss the daily 3-hours progress meeting. "
If only Donald Knuth knew what " Forget about the small efficiencies" would be used to justify.