What's the explanation for every other phone company removing the ports? No phone manufacturer benefited financially from the purchase of my Bluetooth headphones.
I have no way to prove this, but the standard explanation is that other companies are stupid and just want to ape Apple, thinking they'll somehow capture Apple's loyal customers. Cargo-cult mentality.
Of course, there's also the fact that extra ports take up more space, and it's easier to just eliminate features that not enough customers care about. But enough people seem to be complaining that it looks like it really is just cargo-cult behavior, just like these companies have needlessly aped Apple on other design decisions instead of trying to pursue other market niches.
The latest trend of adding iPhone X-style display notches, even by companies that mocked that design when it came out, supports the "cargo cult" theory.