Small nitpick: I think you mean "ceased to exist:. My first thoughs are if the token also has an official website and there's nobody to renew registration the official site would become defunct eventually. Does an official website add to a token's value? I believe so at least a little bit. Then I thought about a token owner not being around anymore, if that was a certainty, means there's no possibility the owner could suddenly mint all the possible tokens and flood the market with the token without warning.