I don't trust HBO to make shows with full arcs and endings. They bombed GoT so hard that the echoes still reverberate from the walls, and House of Dragons did absolutely nothing to rekindle the simple joy of watching a well produced, written, and acted play.
If anything HoD solidified that HBO has lost the thread of entertainment amidst the wash of CGI, fanciful scenery, and dreadfully dull, plodding characters. Viserys was the only shining light of the show and with his passing, the remaining cast and characters desperately attempt to fill time and space with plot that feels tedious at best.
HBO is desperate for a hit to pull themselves back into the hearts and living rooms of the world, but they seem to think that the calculus is pageantry and computer generated fluff, rather than cornerstone fundamentals of story telling. And that is why I expect they will continue to fail.