I assume it is specifically to avoid killing startups in the crib.
If your business model requires that it should be killed in the crib
So current free to user companies just get to hold their market forever? Are you that happy with them?
To continue the analogy, they should be euthanized
Because it's the same principle we apply to other mass communication providers (i.e. telecom providers). Except there it's based on #users, not revenue.