I run a small server for my family on a cheap VPS. We’ve been using it for about 5 years now and it’s chugging along. It’s simpler and lighter than Matrix (at least from the server’s point of view) but the user facing side could use some polish. It’s perfectly fine for one to one chat. I wish it was more popular for group chatting.
Here’s a list of good servers if you want to try it out. You will also need a client. Check one with E2E suppo ort (called OMEMO in XMPP).
If you want to do business with the US (either directly by selling/buying to/from them, or indirectly by using US equipment) you need to comply with US export control regulations as they apply internationally. Even if you are a Dutch company wanting to make chips at TSMC you need to make sure your chips are US export control compliant. TSMC may be a pure play foundry in reality they can’t make anything nor sell to anyone. Don’t get me wrong, it is messed up but that’s the reality. The EU has similar regulations but they only apply to the internal market which makes more sense.