Though bitcoin price is now stable, it is still hard to say where the future of bitcoin really lies. It still has the possibility to collapse if some issues are not addressed. So this is what I think the reason why companies are still hesitant to use bitcoin.
The only thing that can stop people to use Bitcoin is when Bitcoin is officially blocked by the government Roll Eyes
Like Russia that proposed a jail sentence for people who using Bitcoin
But then again, people will always trade their bitcoins on the underground network like TORs whether Bitcoin is banned or not ...
That is what stopping legit companies to get into bitcoin. If bitcoin becomes illegal, they will be risking their company too. That is a huge risk. They are better off using fiat. Maybe for underground transactions, bitcoin is best but not if you are concern with legalities.