The biggest problem is that the venture into space was led by government, which is spastically led by politicians who have to cater to the whims of the uneducated populace and the ambitions of terrestrially-bound corporations led by executives who can't see past the next quarter. The Moon Shot was the big wad spent by NASA and they haven't seen budgets anywhere near that scope again. And the only reason that they got such a big spend was because we were in a penis measuring contest with the Soviet Union with regards to space programs and politicians who could be whipped up with the Red Scare In Space.
We lack a firm leadership who has a vision of where the human race needs to be. Mr. Musk appears to be the next best thing to a leader with a vision. Without the Red Scare, your everyday run-of-the-mill Joe Blow in congress could care less about the space program if it won't get him re-elected.
That's why I led with an economic incentive to build orbital industry. It isn't just space tourism. It's about convenience for the jet-setting continent hoppers who don't want to spend days getting to the other side of the globe, or even from the East Coast to the West Coast in under an hour, totally feasible using a Starship orbit transfer with the orbital platform as the transfer point so everyone goes where they want to go. Layover in orbit waiting for your drop? Why not enjoy a meal with an out-of-the-world view? Do it enough times and even lowly plebeians may be able to afford the price with the economy of scale.
"You show me an American who can keep his mouth shut and I'll eat him." -- Newspaperman from Frank Capra's _Meet_John_Doe_