Despite clearly being an advertisement for Proton's offering, this shows how reliant European companies are on vendors showing strategic problems. We can cheer at the EU policies when they go in the right direction. It's probably not enough already, but the European companies are clearly asleep at the wheel.

Need to move many files around? Rsync might not be the best option anymore.

If you didn't know about quoted printable encoding. This is a way to understand it.