Why full museum-ship conversion depends on replacement income

Could HMS President or HQS Wellington become full museum ships?

They can serve museum functions, but a full conversion must replace their current income and secure dependable long-term financial support.

HQS Wellington already functions in part as a museum and can be visited. The more difficult question is what happens to the revenue supporting a vessel when it becomes a full-time museum. Replacement funding would be needed, while Wellington benefits from committed supporters with deep pockets. Financial sustainability is the central constraint in converting surviving ships into permanent public museums.