It is hard to ascertain what the rate of increase in salaries is sustainable or not. Actors are getting paid more, internet entertainers are getting paid more, everyone in the entertainment industry are getting paid more. Maybe this is related with fiat money losing value in the general sense, but the fact it, increase in salaries, earnings, profits is normal across the board.
If you compare salaries of players from the current decade, with those from the 90s there will be a huge increase, but this increase also happens in other sectors inside the entertainment industry. Actors are also getting paid more compared to actors from the 90s, successful videogame developers are also earning more money, etc...
The Super League was not the answer as these clubs would actually lose money as they would be kicked out of the UEFA competitions
No, they will earn more money because they wouldn't be forced to sustain UEFA. People follow the clubs and the players, not UEFA and its bureaucrats. The popular football clubs are actually subsidizing UEFA and its cronies, not the other way around.
Players would be banned representing their countries as that is a FIFA or UEFA tournament
No, first of all, FIFA isn't completely against the Superleague, it is UEFA. Second, fans follow the players, if they ban the best players then nobody is gonna watch their products/tournaments. You need to understand the fans only care about watching the best players, if the tournament is under the control of this bureaucrat or that bureaucrat is irrelevant. They can't ban the best players because they will be shooting themselves in the foot.
Football wont lose fans without a Super League as they were the ones against it.
Football won't lose fans, but the rate at which it is gaining fans is decreasing because younger people prefer other type of entertainment that is much more dynamic. I wonder how many people against the Superleague watch boring matches between crappy teams, my guess would be a very low %. The Superleague would mean having the best players against the best players time and time again, not one time every 3 months. Some fans were against the Superleague, however, without a Superleague then all the trophies are going to be won by state clubs (Manchester City and PSG so far) because no normal club can financially compete with those clubs. And football will continue to lose ground against other types of entertainment preferred by younger people. Let's face it, the majority of football matches are boring, only a handful of them are entertaining and watched by millions.
British football fans were against the Superleague I believe, but when Liverpool, Manchester United, and other historic clubs realize they can't compete against the finances of Manchester City-Abu Dhabi, they might end up changing their minds. When Manchester City ends up winning 5 leagues in a row, then they will change their mind. It is impossible for normal clubs to compete against the finances of state clubs in the long run, this is important to understand. UEFA has some rules about financial fair play but the state clubs only need to bribe some bureaucrat and that's it, as they have done in the past when they didn't comply with these rules and the punishment was just a small fine instead of kicking them out of the tournament. These state clubs can do whatever they want, Qatar even got the next world cup only by bribing bureaucrats inside FIFA...