I don't know of a survey that would authoritatively answer that question, but modules do frequently change hands after the original developer loses either the motivation or the time to maintain them. There's often some latency between the onset of neglect and the adoption by a new maintainer, so you can't know in advance what the future of a neglected module might be.

I think that if you can't adopt the existing CPAN module yourself, the most bulletproof solution is to roll your own.