Now imagine Google dropping you from the index for whatever reason.
How many of us here would be wiped out?
A business that's dependant on a single channel or platform for more than 20% of its revenue/profit is not a real business as much as it is a sugardaddy's dependent?
A) Standard employee
B) Self-employed but at complete mercy of a company (facebook) which does not know you even exist, who's everyday change of mood could wipe you out
Does not really sound like much was gained going from A to B.
With A you're simply lost (in life).
With B you're blind.
Ideally, the best option is to find your own niche without relying "too much" on other's platform.