The only conceivable scenario in which BTC won't succeed is if somebody like Google creates their own copy and it overtakes BTC.
It doesn't need to be Google, we now have hundreds of alt-coins, it could be any of them
No it couldn't, all the alt-coins right now are bs. Bitcoin has a huuuuuuuuuuge advantage over all those crapcoins because it actually did something new, and thus had value from the beginning. The others are effectively a credit derivative denominated in BTC because the only way they're ever used is by exchanging to and from BTC.
In order for anybody to beat the first-blow advantage by BTC, it will need to be backed by a company with a budget big enough to fund an advertising campaign bigger than all the press that BTC has already gotten, and even more than that, to persuade people currently using BTC to switch. And such companies are few and far between, especially since there's no way it'll ever be used if the company pre-mines the entire goddamn thing, so there's literally no incentive for a company to do such a thing rather than just using the standard thats already there, unless they come up with something miles better (perhaps fully POS, no need for miners or something).
Google won't be funding a fontas-style altcoin pump-and-dump, thats just absurd.
I hope you're right. And I'm willing to except many of the facts you present but they are strongly intertwined with your opinion, which I think is very dangerous for decision making/investing.
History shows a long line of innovators whose ideas get exploited successfully by other people.
I'm simply offering you a pragmatic perspective.