Sports photography is not a cheap hobby. Expect to spend 10 times your budget just to get started. You can save (some) money by shopping used on sites like adorama or B&H. Older models of DSLR can be had for a pretty good deal because all the kids these days are hyped about mirrorless. Expect to do a lot of research and wade through a lot of articles written by gear obsessed people with money to burn. I think you can still browse archives of dpreview.com for some in depth reviews and specs, especially if you're shopping older models.
Pretty much any consumer camera with an interchangeable lens will do the job, it's the lens that will really determine how good a picture you can get. There's a reason you see a lot of HUGE (and expense) lens on the sidelines. Megapixels are much less important these days because pretty much everything has enough. The metrics you'll be looking to maximize will be a fast autofocus system, a fast lens, and a long enough focal length to get your view in close to your subject from a distance. You might be able to find something that is "good enough" in a cheaper range with a camera with a built-in lens. If you get bit by the photography bug though, that might turn out to be a waste of money if you decide you want to upgrade.
Where should the industry go?
Maybe focus more on developing good games that are more than just good graphics. A shit game will still be a shit game at 4k and 120fps. A good game doesn't necessarily need all that to be good. Game developers seem to have lost sight of doing more with less.
The industry has corrupted the mindset of their consumer base with this capitalist driven myth that you need to buy more stuff to be happy. The kids out there trolling about shit graphics and the PCMRs complaining about the lower console specs are gobbling it up. Now that one company is seeing diminishing returns, they're considering pulling back on that growth mantra. Maybe they'll start encouraging game development that doesn't waste so many computing resources for schlocky derivative lazy content. I'm sure they'll find some other way to convince us that in order to keep gaming, we'll need to keep buying.