The first step in disentangling is actually not that hard.

Switch. Email. Providers.

I've been in a medium-sized business (about 500 people) who did that. The switch took a weekend, and managing the glitches that happened afterward took probably an extra two weeks.

The next one isn't that hard either.

Switch. Web site. Host.

Same business did that as well. That literally took a weekend without glitching later.

With those two alone that's a major chunk of a business' exposure to America tech firms (and thus American government retribution) gone.