Yes there is already a lot of merchant who already accept Bitcoin as their payment. Example :
*Microsoft - You can use Bitcoin to deposit funds into your Microsoft account. These funds, however, can only be used to purchase games, movies, and apps in the Windows
*Cheap Air - Fly with CheapAir using your cryptocurrency. After you choose your flights you are given your payment options, including BTC. You can make both domestic and international flight arrangements with CheapAir. The travel company has been accepting bitcoin payments since 2013 and is the only one that will accept the currency as payment for air travel. Transactions are finalized using your Coinbase wallet.
*eGifter - eGifter is a popular gift card site and mobile app that lets users buy gift cards for all sorts of places, including Amazon, JCPenny, Sephora, Home Depot, Kohl's and more. eGifter uses Coinbase as their bitcoin partner.
and there is still a lot of them who already accept BTC as the payment method