I'm not too worried about vic3's future. Part of this is because the studio wants it to be a successful, long-term game.
In corporate terms, they really want another revenue stream. The Ck, Eu, and HoI franchises, as well as Stellaris, are their main money makers that are propping up the company with constant DLCs. Having another profitable franchise means another major source of income and better cash flow, which is important to their investors. It seems they're commited to have Victoria be one of those franchises.
Vic3 may be or may not be doing well, I don't really know. But what I do know is that when a corporation goes for a gimmick or larger strategy to make money, they can be really, problematically stubborn about letting it go.