So nice overview! Fir sure lichess is what I call a "technological miracle"
They keep everything free but at the same time provide an extremely developed technology, it's really impress the way can get support and keep the machine ongoing. I think we can't compare chess.com and lichess, of course both of them with to play chess games but the philosophy is totally different. Chess.com has an stunning business model and of course they make good money but lichess I feel is more like for enthusiasts and people who want to create a keep a huge chess community.