If smth is bubble it does not mean that said smth has no value. It just means that there is over investment and thus inefficient investment. Like housing bubble - nobody argues that houses are not needed and are not big part of economy.
From where I sit, smartphones completely ruined the internet.
If you're defining "successful" in the sense of people-making-a-lot-of-money I completely agree.
If you're talking about the internet in 2005 vs 2025, smartphones completely ruined the internet. At one point I had half my high school using HTML in their AIM profiles because they thought mine was cool.
Now kids can hardly even type on an actual, physical keyboard.
Yes, but generally not for the companies who were closely involved in the dot-com bubble; Amazon is probably literally the only exception of any significance.
And, well, not all bubbles go as well as that. See the cryptocurrency one, say. Or any of a number of _previous_ AI bubbles.