The major factors affecting bitcoin are :
Change in government - it's simply means when another government enter there's will be reduction or addition of some policies.
Political instability - when political system in the country is not stable, everything will get down.
I guess you don’t know OP the fact that, BTC is decentralised that is, it’s can’t be controlled by any government.
So i guess these factors not at all affects the Business related to Bitcoins.
According to my perspective the real reason that affects the price of BTC is it’s price itself.
Due to uncertainty of the price and continuous changing of the value of the coin, many businesses are getting hampered.
That’s why till now many other businesses aren’t integrating BTC as a payment getaway too.