Light tech regulation was exactly the correct approach in the 1990s (and arguably the 2000s). It enabled mind-boggling rapid and stunning innovation.
... However, the massive corporate fortunes built by the winners of those times are now primarily enabling rent seeking.
Google and Facebook's other work is interesting in the same way that Bell Labs was interesting -- great for a few, but funded by taxing everyone (albeit via tracking and ad market control in this instance).
And they've learned from their predecessors' demises that part of their winnings need to be continually re-invested in buying startups that might threaten their dominance.
IMHO, everyone will be better off if Facebook, Google, and Amazon are shattered into small enough independent pieces that (1) "get bought" is no longer the startup win condition & (2) they have peer level competitors in all markets in which they participate.
Apple and Microsoft? Mandate open app stores and devices, if an owning user so chooses.
Thinking back to the 90s... if anyone has guaranteed revenue streams out 10 and 20 years these days, the market as a whole isn't competitive enough. That should be enough time for the entire playing field to upend itself.
At least, it used to be.