I'm not the one at my company closest to the situation, but my understanding is that even though our federated gateway is self hosted, we still pay to use Apollo's proprietary schema verification and compatibility check service. I think our front end team also uses Apollo Studio a lot for building queries, which I'm assuming costs something.
One reason why they're laying everyone off. Lots of VC money sloshed around the past 15 years but now it's time to actually turn a profit for most of these companies. This will show whether their business models are actually viable or not.
In a low interest rate environment even if you were profitable, if you could get cheap money it might have been worth it to grow vs. slow down and let other competitors get market share. Many companies that could be profitable choose to invest low cost for capital in growth