Can closed-source and non-free software be distributed in the RHEL app store

I haven't been able to find the answer to this question anywhere. Hopefully, someone here can help.

I run a software startup that has built an enterprise focused email client (just for MS Exchange and Office 365).

It is cross-platform, Windows / Mac and Linux and we recently got into the Ubuntu Software Store and the reaction has been very positive.

We haven't produced an RPM but did create a Snap (so it will run on Fedora). I'm trying to decide if we should start working on an RPM or Flatpack but without an effective way to distribute on RHEL it would be pointless.

Any help would be appreciated!