Does make for some concern. Unlike Musk/Twitter most federated instance wouldn't be able to fund a legal dispute or ignore warnings.
Upside being some instances will be hosted in more legally indifferent countries and the game of whack-a-mole as more instances pop up. It'll be closer to their attempts fighting piracy sites than other social media, I imagine.
What would you be willing to pay? I paid £4 for Sync in 2018. I can't imagine a Pro (non-ultra) version would be that cheap this time.
At the minimum I'd think it'd match 1 year of Ultra (£17). Not sure if I'd pay that for Lemmy since I still use Sync for Reddit more.