If it was known 10+ years ago that Caltechs glassblower made 300-500k a year, you can bet they wouldn't be in this situation now.
The million dollar salaries for baseball players entice entire generations of kids and teens to at least "try" the sport. It keeps the good ones motivated and the few elite athletes a payout for a lifetime of work.
We could argue whether this is all worth it for entertainment, but you can't argue with the compensation model, it flat out works. It attracts and retains the absolute best people in the world at that specific job.
So if you spread the contract out over ~30 years or so, the numbers look far different.
[1]: http://www.espn.com/mlb/story/_/id/15126571/study-mlb-averag... [2]: https://www.sciencedaily.com/releases/2007/07/070709131254.h...
And we as humans control "the market". It's not some abstract impossible-to-reason-with force. The better that we understand this, the better our economies will work.
I'd say instead "that's how the market DOESN'T work" since clearly there are a lot of market failures - master glass blowers being just an example.