Of course water could be common. Hydrogen is the most common element in the universe and oxygen is the third most common element in the universe so who could be stupid enough to think that it is rare anywhere but here. Water will be water here, on Jupiter’s moons, in comets, so by extrapolation how far do you have to go before water isn’t there anymore? And since carbon is the fourth most common element in the universe, it stands to reason that carbon dioxide and methane will be very common as well.
And another thing, planets are not internally heated by tidal forces, they are heated by decay of unstable heavy elements.
“Hydrogen is the most common element in the universe and oxygen is the third most common element in the universe so who could be stupid enough to think that it is rare anywhere but here. “
The facts you mention while suggesting conditions for combining hydrogen and oxygen into water may exist with exo-planets in other solar systems, it is that combining of the two elements, and the conditions for it, which may NOT BE so abundant in the universe. If the mere existence of how much hydrogen and oxygen go to make up the known gases in the universe was the COMMON AND ESSENTIAL ingredient for estimating how often water “ought to be” present, then it would certainly be more present even in our own solar system than empirical science has determined so far.
Just take our own planet and what is described as key factors that make its ability to contain water - distance from our star and other factors, yet scientists still debate whether water was present in what went to make up the earth from the solar disk, or if it arrived early in the course of earth history from asteroids and other bodies that pelted the early earth. And none of the scientists on either side of that debate argue that water is here merely because of how “common” are hydrogen and oxygen.