YouTube has never been profitable. Twitter and Facebook make plenty o money. Subscribers don't drive market value. They make money from advertisers and they will be fine.
Just a few years back Twitter had never turned a profit and looked like they had no ability to do so. Last I looked, they had lost 1.5 BILLION and a continued increase in operating overhead.
Is somehow doubt they turned that around in a few years. Now they've lost 50% of their traffic, which is huge for advertisers. Likely have forced out 50%, or more, of their user base. Again, huge for potential advertisers.
The fact their stock hasn't imploded is proof profitability has nothing to do with Twitter's continued existence.
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