Unfortunately I don't see an easy answer to this.
Unfortunately I don't see an easy answer to this.
I understand that this is the current goal of the companies you named, but, to put it bluntly, why should I care? My goal is to not have to deal with change just for the sake of change, or because some company wants to keep capturing new users. (Which is why, as I've said in other posts in this thread, I don't use GMail, don't use MS or Apple products, don't keep upgrading my Linux desktop just because somebody invented a new UI, etc.)
Also, "keep getting new users" isn't a sustainable goal anyway. Facebook already has more than a billion users; they don't have too much further to go before everyone that has Internet access at all (apart from a few outliers like me) will have a Facebook account. What do they do then?