The article was too long to read in full. But if I get the gist - lots of massive sports parks is the new "arms race".

I guess that's not a horrible thing.

But for soccer, kids need futsal courts and indoor and public spaces for pickup soccer.

As they get older they do more regimented training at a club typically.

Baseball I don't know much about, but there are many public baseball diamonds near me. More baseball diamonds than soccer fields, way more, at least near me.

But there are a few big "sports complexes" with a lot of soccer fields, they're just a hike to get to.

I think what you're talking about has been referenced as "Moore's law is dead"

Because yeah, at some point things get "good enough" and so the rate of advancement slows down, eg with computer chips or screen resolutions (4k, then 8k, how much more will people care about? not much because the incremental improvement is not that noticeable to normal humans).

BUT... there are many areas where things are not "good enough". So those things perhaps will be on a Moore's law type curve. Transition to EVs from internal combustion, battery capacity, solar, etc.