Are all your eggs in the Facebook basket?

So it turns out that there's a storm brewing around Facebook's new policy decisions. This would primarily concern those who've used FB on a very regular basis and are trying to use it for professional or business or direct/indirect personal/business reasons or whatever. Before you read on, check out this article 'Facebook, I want my friends back' linked to the Dangerous Minds website. To be honest, we aren't really invested that much in Facebook even though we(AccessibleHorizon FilmCollective) started our FB account primarily for our artistic projects(I don't have a personal account for myself). We try and post regularly about our projects and 'hope' to get some traffic out of it. Our 'fan-base' isn't that much in the sense that we'd lose out on too many promotional opportunities, because we haven't gone full-out on Facebook.
But obviously, there are millions of people, who are FB users, that have been relying on it so much that virtually their 'online' existence depends on it. So, the 'bait-and-switch' model that it has implemented now, is inevitably creating a bit of a furor among users. I personally am trying to figure out whether this is a good thing or a bad thing; that is whether FB was right in their part to charge their users for their posts, or if they are wrong, like many users feel. As the post and the subsequent comments point out, it affects a lot of the smaller companies and people who are grappling with this change and trying to figure out how to go forward.
I ain't going into too much detail, coz we already know the pros and cons. And I don't want to take a cynic's stance and say 'it is what it is, so deal with it'. Of course, I imagine that's what it eventually would boil down to. But I figure just one underlying thing in all this free-market, business model approach or whatever - that as users, we have to ask ourselves the question of 'Are all our eggs in the Facebook basket?'. Meaning, whatever happens, are we going to or rather, should we keep and/or safeguard our eggs(our promotional, marketing or business out-reach) strictly and only within our FB basket? Time and again, the 'free-market' economy has taught us to be wary of things like this. So why fall for the same again? If we were to operate our ventures online, it would be smart to spread out on several platforms and keep Facebook as 'one' of the baskets. Kinda like spreading your 'investment' across several platforms. Just something to ponder about.