Nearly all large and even mid sized companies have customers who use a different currency and have to deal with it. Big companies hedge foreign currency risks. It is common for the press release for a companie's earning to say "we made $x per share driven in part by foreign currency values and ..." Which is to say when looking at a press release they believe their investors (perhaps a legal requirement?) will want to know that a significant factor wasn't sales but just currency trade.
Now bitcoin is super-volatile. That isn't relevant to a general discussion, but it is a major factor when discussing bitcoin in specifics. There are other foreign currencies that have similar considerations at times though, it isn't unique to bitcoin.
Even the value of the dollar is significantly in the social contract with Saudi Arabia (not sure if "social" is the right word, but it's definitely not legal, as both sides are sovereign and thus free to change any law or contract between them)
Seems to work well, for the most part. Granted, on occasion disasters happen.
Like, what accountant would be capable of planning finances for a business where every single liability is denominated in a super-volatile asset? The whole thing is nuts.