The biggest point you seem to be missing is that TDO is ignoring their offerings and focusing solely on the infrastructure. I hear what you're saying about Disney is spending the money on future theme park infrastructure that others aren't willing to spend and maybe it will pay off in dividends one day. But you can't ignore your core business while trying to build out your next big thing! You can't throw all of your eggs in one basket (or budget towards one project). Disney is LUCKY that such great theme parks were built out in the 80s and 90s because WDW wouldn't have been able to survive otherwise. It's been 7 years since we've had a major ticket ride added to the 4 parks....7 years! Meanwhile Uni and SeaWorld are added major attractions every 2 years!
Regardless of how great you think this NexGen Infrastructure is, it's not going to keep people coming in the gates. It's not going to make people want to visit again and again. It's not going to increase attendance.
Infrastructure improvements need to be done in addition to offering improvements and upgrades. Buses, road improvements, parking structures, Monorail expansions can and should all be done in addition to adding to the attraction line up. You must have missed the thread where we were discussing that Disney World's physical infrastructure is also crippling and needs massive upgrades that would allow them to move away from their dependency on buses.
I wouldn't be so quick to say that the numbers are great. There was a reason TWDC pulled a shell game with their attendance numbers a few years back to stop giving us individual park figures. And we know from reading the annual reports that hotel occupancy has been down, and that the only reason per guest spending had been up was because of increased prices. I know Disney World is a hard habit to break, but taking a trip out to Disneyland is a real eye opener. I want to want to go back to my beloved Magic Kingdom in Orlando...but there's no reason for me to, especially not for more money than I had to pay when I was last there 3.5 years ago. NexGen isn't a reason. Be Our Guest Restaurant isn't a reason. Seven Dwarf Mine Train isn't a compelling enough reason...