Ubisoft has quite a track record for staying on their games as a service. Rainbow Six, For Honor, The Division…
Skull and Bones has a great base to build on (imho!) and I am really curious how the game will develop.
I must also say I got it for 38€ and I think that’s reasonable price for it but I also thinks it has still some issues and bugs, but the most important thing is I actually have fun with it.