I am not surprise that even the Microsoft started accepting bitcoins as a method of payment because of its popularity. They will adapt at the current market demand. And this proves that bitcoins is not entirely focus for investment but also as a currency you can use. I think more big companies will also accept bitcoins in the future.
Bitcoin is the future now we can see big companies trying to accespts it and used it, another big move from making btc known. More companies will follow this move since it's much convenient to do so.