broadcasters have been doing the home camera thing in a limited sense for years. i think we'll see more of that, yes. there are also new apps being developed that will allow fans to "cheer" remotely: https://www.cnbc.com/2020/07/07/yamaha-idea-let-sports-fans-send-virtual-cheers-into-empty-stadiums.html
we'll probably see a combination of this kinda remote fan participation and virtual/CGI crowds and noise to make the whole experience more realistic and competitive. it won't be quite the same as the old days, but it's better than empty stadiums with echoes and commentators and nothing else.