Of course. There's never any free lunch. There's always a cost to software development. Just sometimes the cost gets shifted in a way that's beneficial to the general public. But it never lasts.

At least with bitwarden, if the value they're trying to extract becomes more than the product is worth, in terms of real cost, lockin or transparency, at least the code is open now and for the foreseeable future. And when it comes time to fork it, AI will make it easier for the future maintainer(s) to keep the fork alive at minimal expense.