Yeah it isn't like the 50s or 60s where they could just sign college football stars and bring in a ton of attention and some money to their new league.
Kinda makes you wonder if Musk,Bezos and some other multi billionaires got together to usurp the NFL if it would take, if they had many many billions to do a startup like that.
even more complicated then that, much much more money, think about the NFL as club that allows Buy-ins where you have to have 3-10 bill just to be considered. there's 32 of these with very little turnover.
so more then a few billions would be needed to form a full league and a decade to try and get breakeven profits and catchup to the nfl. maybe the USFL/XFL can operate as a Dleague but if you want an actual competitor, it would taKE100billion plus and many many years to even maybe an attempt to compete against the NFL if they could even find payers good enough to form product as good or better., doubt thats possible..
a good idea above was possibly merging usfl and xfl to make it better but it will never be the NFL.