[ihojman]

I don't think it's immoral if you get to accomplish all of your tasks in both companies. For what I understand, companies want you to do the work they hired you for; they make money out of you, otherwise they wouldn't need you.

Maybe a better way to be at 2 companies at the same time is by being completely transparent about working on both places with one of the companies. You automate all your full-time boring work in the first one, and in the second maybe you do part-time, or some kind of work that can align with your own interests.

maybe an etrepeneurial partnership or a flexible deal to get a new product that really interests you without having to commit all of your life.