TLD proposal X is a bad idea. So what?

On the IP list, Karl Auerbach explains why a TLD for “mobile content” is a bad idea, even though it’s backed by major industry players. Karl’s arguments are convincing.But whom could Karl convince? I hope he does not convince ICANN: Because it is not (or, rather, should not be) ICANN’s business to decide whether a TLD proposal is a good or a bad idea. ICANN’s task should be to enable bad proposals to fail in the marketplace.Question: What should ICANN do when a seemingly “good” idea and a “bad” idea compete for the same TLD string? Auction?