If someone needs their Odoo customized (very common with ERPs in my experience), that's something I can do for non-Estonian entities, though I may have to check if I can do it in the rest of Europe. I'm more affordable than an official partner and you still get an invoice from a legitimate company. I just have a noncompete that I know covers Estonia, but don't remember if it covers the rest of the EU.
I've also been wanting to set up a service similar to odoo.sh (simpler at first of course), but it's also pretty time consuming and a lot of responsibility to customers so I can't do it until I can afford to ditch most of my consulting work. This would also exclude Estonian entities as customers for sure, at least while my non-compete lasts.