It’s been well known in advance that Ripple’s days were numbered; the recent lawsuit has been waiting in the wings for over a year now. We discussed a few months ago whether any of the same susceptibilities could apply to Cardano and the informed consensus was a definite no:
So whatever “alts” are brought down according to similar regulatory pursuits, Cardano won’t be among them. On the contrary I would say a lot of Ripple’s capitalisation (what isn’t lost by a shrivelling XRP) will be looking for a new home, and a lot of that will settle in ADA due to Cardano’s recent and imminent technological advances & industry partnerships.