I don't see there is any problem with they do, you can get your cap in all coins as far as an conscience even if you just used one method to accept fund, you can decide to collect 35 ETH and make your market cap at 1 btc. Even EOS that ran a project that will compete with ETH first did their ICO on the ethereum blockchain before switching to theirs after it was built. This is the main reason I like crypto, what a free market.

Anyone may get paid with anything regardless of where they will be working. I guess if Satoshi had hired some tech people to assist him then they might have got paid in fiats and definitely not in bitcoins as bitcoin was valuing almost nothing at those times.