So when I say we seem to be in an advertising bubble, it's not a statement that there isn't a revolution in advertising coming that somebody is going to profit from, it's a statement that it isn't coming at the pace people like Facebook are promising, nor can it sustain that level of investment profitably. I did make sure to call out Google for having legitimately advanced the field. If the bubble pops they'll get hit, but I have every confidence they'll survive and thrive, because they definitely have real value, just as Amazon has survived and thrived after the last bubble.
(I expect somewhere in the 5-15 years time frame there's going to be a robotics bubble too, and it won't be because robots that can coexist with us in our houses and streets won't be every bit as revolutionary as the hype claims, it just won't be revolutionary as quickly as the investment would require.)
