I could not understand when you are able to exchange/convert your altcoins to bitcoin, what is the need of searching for altcoin accepting services or gambling.
Other than this, if gambling houses also provide exchange services within their site, they will not be loosing an altcoin gambler.
Maybe because they want to grow their altcoin? Converting comes with fees, and the price could change a lot when you are finished gambling. It's easier for some people to find an altcoin accepting site to gamble with.Other than this, if gambling houses also provide exchange services within their site, they will not be loosing an altcoin gambler.