What is the current tech bubble, exactly? Those companies you mentioned have absolutely massive revenues and profits, and plenty of non-tech people and companies are responsible for those revenues and profits. This was not the case in the earlier bubble (lots of overvalued companies with little or no revenues).
What seems more likely is that the little startups will get crushed as VC funding dries up.
I think that's true, but I also suspect that one of the main drivers for the incredible acceleration of big company salaries has been to keep talent at that company rather than seeing the best engineers leave to go take VC money and play the startup lottery. If VC funding really does dry up, the pressure to keep salaries this high may be considerably lower.
What seems more likely is that the little startups will get crushed as VC funding dries up.