> So, this is neither good nor bad, just a shift in where the competitive opportunities are.
Many see this shift itself as a bad thing. Instead of having career options in stable companies, most people (who necessarily can't all be founders or early employees in the places you allege are still sources of entrepreneurship) are forced to accept unsatisfactory compensation, benefits, and employment stability -- in return for foosball tables and dog-friendly offices.
I interpret the comments about barrier to entry in exactly this way. If it's easier to "enter" low-status entrepreneurship (e.g. start-ups), but this easiness is offset by a disproportional lessening of the potential upside (especially the stability and security upsides), then it could still be a net loss overall.
It is a means of restructuring the process by which the deployment of capital is used to extract productivity -- a restructuring that transforms the process into even more of a transfer of wealth from poor to rich.