Microsoft accepts Bitcoin. You can "redeem" Bitcoin on your Microsoft account and make purchases through the online Microsoft store. They are the Biggest retailer that I know of that accepts Bitcoin. Other large retailers are Newegg and Overstock. In Japan, Bic Camera is a large retailer and you can use Bitcoin to purchase items in all of their stores. That was pretty cool. These are huge legitimate businesses.
I'm not sure Microsoft has issued an official statement about it, they are still in the stage of developing their own currency and have not adopted bitcoin legally. If this applies to developing countries will also experience serious problems where many countries do not consider the cryptocurrency-especially bitcoin as a legitimate payment instrument. There are many things we can buy from bitcoin but can not move nationally and recognized by the government.
While some say its digital gold, its no secret that Bitcoins volatility and slow, expensive transactions have held the coin back from wide adoption as a payment method. The release of the Lightning Network is certainly a step towards fixing these problems.