These companies need/want to start making money. Either due to investors wanting a return on their investment (Reddit IPO, Amazon buying Twitch), or poor decisions which have lead to lots of debt (Elon buying Twitter). Companies can't get free/cheap loans any more since interest rates are high.
Many of these social media companies all followed the tried-and-true "embrace, extend, extinguish" methodology... Offer a free/cheap product until you gain the network effect that kills your competitors, then crank up the prices to turn a profit.