Marketing your product that helps people be more productive in an unfortunate situation is not unethical or taking advantage of anyone. Every business needs a catalyst for people to realize you are solving a genuine problem for them. Embrace your established position with a functional product and solution and become a market leader by solving the current problem of the day better than anyone else! Good luck!
I market it to teachers for use as a remote classroom, so it's nice to be able to help out a bit. Though I'm a bit conflicted about marketing it too much right at the moment. The last thing I want to do is profit from the current situation.
[1] https://www.twiddla.com/