Some stability would probably help serious companies to accept cryptocurrencies, but it doesn't mean that the stability should be on the current prices. The market needs to recover for people to trust in it. It lost billions of dollars very fast and that's not very encouraging. IMO if the market gradually returned to previous ath and then stabilized around it with +-10% fluctuations, it would be perfect. People would either profit or at least return their investments; traders will be able to profit from regular cycles; users will probably tolerate such small fluctuations.