Yes, it's a competition. But it's also a highly political environment. I imagine that, in case Mercedes arrives to a point where they have to decide which driver to support for a Championship bid against Verstappen or Leclerc, Hamilton would be the chosen one. In that situation, I don't think it would be a good idea for Russell to confront his team.
I don't say it from a moral point of view, just as a better strategy for the development of his career. Russell is 23 and he is driving for the best team in the sport. Lewis will be 37 before the beginning of the season. Time is on George's side, he better proves on his first year that, by the end of the season, he can match Hamilton's pace, while being a loyal team member. Next year, we'll talk.
These are all sensible musings, from an outside perspective.
But I’m certain George is not thinking about Ham’s age or his own and who has more time left. As you mentiomed earlier, these are all hypothetical musings. We don’t know that george can keep up with Lewis.