The PGA and DP World Tours aren't going to have the money to compete with the Saudi PIF. They just aren't. LIV will prove an impossible lure for even more current players on those tours because they're offering more money for less work. Who cares what the fan support might be - the PIF isn't making any money off of this. It's sportswashing funded by oil money, which the world isn't going to stop buying anytime soon. As more players leave the PGA and DP World Tours for LIV, I don't believe there will be a corresponding rise in viewership or fan support for LIV. Golf will just lose those fans permanently. I have zero interest in following a tour whose primary leaders are the Saudi government, Greg Norman, and yes, Donald Trump - and I guarantee that I'm not alone. The players who have chosen the LIV have been completely fine with being ineligible for Ryder Cups, Presidents' Cups, and potentially even majors down the line due to bans or not accruing OWGR points. Their actions show that they do not care about the history of the game or the greatest events in the sport.
The greediest players will make a ton of money while the overall standard of competition declines, because the incentives to work as hard for a high standard of play will be less with the increased guaranteed money. There will be a PGA Tour in 10 or 20 years, but it may hold half as many tournaments and for similar purses as today with reduced corporate sponsorship while LIV continues to pour tons more money into an inferior product. Communities around the US will no longer host the best golfers in the world annually for tournaments, which will be a hit to those local economies and for the game of golf in those areas. Overall, there will be fewer people that follow golf and it will fade in the post-Tiger era into even more of a niche sport. You can't replace the history and legacy of the PGA Tour simply with cash. Those running the LIV could care less about the growth of the game internationally, or even turning a profit. Their motivations are strictly selfish. Just as conference realignment is slowly degrading college athletics and widening the gap between richer and poorer, the PGA Tour/LIV battle will end with no winners except the players of LIV. Maybe 100 people will benefit in the short-term while millions lose interest in the game of golf. And as a golf fan, that is very sad, but I have little I can do to affect it.