Treaty permission would not save every dreadnought

What if the Washington treaty allowed every navy to keep all ships built after Dreadnought?

Many ships would still be discarded because permission to keep aging dreadnoughts did not make them affordable or useful.

Legal permission to retain a ship did not provide the money required to crew, maintain, and modernise it. Britain had already begun discarding 12-inch-gun dreadnoughts around the end of World War I, so removing treaty compulsion would not preserve the entire fleet.