I doubt that any business with 100 millions USD of revenue would accept bitcoins right now. Do you realize how much a 1% shift in Bitcoin price (which happens everyday) would affect the company? Million dollar companies don't play the roulette with their revenues. Every dollar is accounted for.
the main problem of companies is less bitcoins volatility but its dividability, how can you liquidate, bitcoin when you have to pay 1000 employees?
regards