It doesn't matter how many businesses accept Bitcoin if you can't convince the average consumer to use them (Not miners that end up with Bitcoin and need something to do with them, I mean real people). Eventually, if no one spends Bitcoin the business that started accepting them will stop because there's no reason to continue. I explain the reason here:
https://bitcointalksearch.org/topic/m.18527065Microsoft stops accepting Bitcoin
Much was made of Microsoft’s move two years ago to start accepting Bitcoin as a form of payment for purchasing content from its online store.
The situation has, however, quietly changed, as the computer giant has recently added a note to its website revealing it’s no longer accepting the cryptocurrency in the Microsoft Store on Windows 10 devices.
“You can no longer redeem Bitcoin into your Microsoft account,” the message says, though adds that existing balances in user accounts “will still be available for purchases from Microsoft Store, but can’t be refunded.” So to be clear, any funds in your account now are good to use, but forget trying to make any new deposits into your account using Bitcoin.
Source:
http://www.digitaltrends.com/mobile/microsoft-drops-bitcoin-for-windows-store/Those businesses that do accept Bitcoin don't really accept Bitcoin:
Almost none of the businesses mentioned above technically accept bitcoin. Instead, they partner with a middleman—generally either Coinbase or BitPay—who takes a customer's bitcoin, immediately converts it into cash, and then deposits the cash in the company's bank account.
In other words, Dell, Expedia, Microsoft, and Time, Inc. don't actually "accept" bitcoins, per se. They accept U.S. dollars. It's their bitcoin processing partners who accept bitcoin. They, in turn, make money on transaction fees (in the case of Coinbase), or by selling their software and services as a subscription (in the case of BitPay).
BitPay, which has partnered with Microsoft, Newegg, and other merchants, confirmed to MONEY that the majority of its major clients ask that their bitcoins be instantly converted to cash. "I would say as a general trend most of our larger business do choose a settlement in 100% U.S. dollars because that’s how they do their accounting and finance," said Tony Gallippi, co-founder and executive chairman of BitPay.
Source:
http://time.com/money/3658361/dell-microsoft-expedia-bitcoin/