Some fans will disappear, but fans need an alternative also. For example, the internet released millions of conservatives from having to read their local, Buffett owned leftist rags for news.
The XFL owners probably kicking themselves for folding due to Covid-19. They would benefit bigly.
Some fans will disappear
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And they will soon discover the pleasures of engaging in productive and enjoyable pursuits instead of wasting endless hours watching overpaid and thankless people play games.