@J**
a 10 year US tourist visa (B-2 Visitor Visa) does not let you stay continuously in the US for 10 years. You get 6 months per entry, but it is for tourism and there is a rule of thumb that they expect you to be out for at least as long as you are in. You can't just "border bounce" to extend it.
Working remotely is also legally prohibited, beyond incidentals (like checking an email). DTV is explicitly offered for working remotely.
For now, you CAN stay 5 years on a DTV, as long as you leave every 6 months you can come back immediately, and you can keep that up for the duration of the visa. May change, but that is how it's working so far.