Unlimited supply on Ethir IMHO couldn't help him beat the price of BTC per one coin, but total capitalization of BTC can be reached by ETH in the far far future)
Acne has long been ready for the change. I don't know whether they implemented it I have heard that he wants to limit the number of coins to 120 million pieces. This can reduce the inflation of these coins. But I do not believe that eth will ever be able to exceed the level of 0.1 btc