There's no other new Trek competing with these movies right now. Long delays between them are more likely to crush momentum than they are to whet the appetite.
Really? This forum has remained remarkably active for the last two years.
I don't think the market will bear any more Star Trek
than it will any other franchise film series, and they don't need to be diluting it by putting it back on TV right now. Three years would probably be better than four, and I imagine that's what we'll see next time.