从产出的角度讲：作为两个商业运营模式最成功的体育赛事，每年的商业收入是多少？球员的薪水与之相比似乎微不足道吧！
从投入来角度讲：能在NBA和欧洲联盟打上球的毕竟是少之又少，这些人出来极高的个人天赋之外，其后天的自身投资也是天文数字吧！
一言以敝：这是一个市场选择的结果···

产业链……虚拟的东西，也就是娱乐的东西，算是生产力的一种吧……进入商业，成型为逐渐完善的产业链……供求起作用了

相对于巨大的市场球员的数量实在是太少了。

NBA is a well run and very profitable business. the number of people to share the profit
is very low. couple of thousand? so the pay is very high..

another subtle reason to keep the pay very high is to attract talents. 99% of the poor people
who would like to pursue NBA career would fail. To make the small probaility pursuit attrative enough,
it is in the interest of the NBA commission to keep the pay reasonably high.

需求与供给的  市场化结果