Again, a macroeconomic analysis with no explanation of how this is relevant.
If the large tech companies are the vehicle of the monetary regime, then aware people will want to maximize their interests...One way to improve their interests is to use alternatives or to somehow influence the large platforms. If the large platforms do not change in peoples' favor, then it becomes clear that the more effective use of time/energy to use alternative solutions
Even if the large platform does change one's favor, the awareness that those who control it are not creditable leads to distrust & an understanding that participating with the creditable is a better mid & long term strategy.