I know a few guys who own small businesses in DR, and others who rent properties. Some do business as a fun hobby in semi-retirement, others depend on it for their livelihood. All think that 2020 will be a wash for them, and have no expectation of a return to whatever the new normal is anytime soon.
Some are looking for opportunities to acquire land and/or businesses for cheap when the time comes. Personally, I think expat properties may go on sale, but local-owned units, not so much (as they're often paid off, making it easier to sit on a vacant property.)
The problem is that the majority of DR's North Coast visitors are tethered to linear income, meaning their livelihoods are connected to a job, or some sort of retirement or disability benefit. Regardless of what the stock market does, NA and EU are both heading into a difficult time where discretionary/vacation income will be relatively scarce. Combine that with the very reasonable likelihood of a second wave, and a slow restart in DR regardless, and who knows....
I admire my friends' optimism, but wonder where things will be by the end of next year. For those doing it for fun, they should experience virtually no changes; the others may have a difficult time ahead of them.