Just because you don't want something to happen it doesn't mean it can't happen. You speak with such certainty as if you either don't want Facebook to do it (which I understand) or you have inside info.
Facebook will get money from the ratio in the same way Youtube does. In fact they'd get even more money because more people would use the platform, click the ads, create content etc. It's kind of like if you say "if you give people more of their own money by lowering taxes, it will bankrupt the government".
Take Instagram for example? The model for Instagram isn't simply to sell ads. Instagram is about influence and influencers. It's about the attention economy. There is a scarce amount of human attention in the market. In order for there to be accounts with millions of followers there has to be a way for those accounts to get attention.
Right there you have all the market dynamics necessary to make plenty of money without having to use traditional ad models. What you're talking about is traditional revenue generating business models. Instagram isn't the traditional model and neither is Facebook or Amazon.
I admit you can make a case that currently the Facebook like economy which is a market of it's own, is currently not using a currency which people are valuing in USD. While Steem has the same upvote economy which is using a currency people value in USD.
If Facebook has a stable token and it's more stable than the Steem Dollar this changes things. Suddenly Facebook at any time could decide to integrate this token into Instagram, Facebook, or WhatsApp. This token alone would potentially kill Steem depending on how Facebook chooses to integrate it.
Facebook could choose to for example pay the user to watch ads or interact with certain accounts. The money would come from accounts which want more attention from users. Facebook could take a small cut of the profit, say 20%, and the 80% goes to the users. So there is no reason to believe Facebook would somehow lose money.
We see the model already on Coinbase with Coinbase Earn. When you watch a video and answer some quiz questions you earn tokens. This model scales, and Instagram could integrate it.
Who said it's about getting clicks? You did. I didn't.
To watch a video is worth more than a click. A click obviously has some value measured in some microtransaction, but to watch a video also has value. To watch a video and learn (pass a quiz) has much more value than to just watch a video, and to do some action such as to re-post something has as much value as your account is worth.
Just because you're not creative enough to figure out how many markets can be formed using a token on Facebook infrastructure it does not mean Facebook employees aren't creative enough to know what they have.
Steem made the mistake of not knowing what we have. And now we are in a position where the value of our tokens decreases continuously.
I don't make posts based on what I want to happen. I'm looking at data. Look at the current trajectory of the Steem price to BTC ratio. BTC is going up, other alt tokens are going up, but Steem consistently is going down.
So until the data says something different my post is justified by the data and not by emotions.