The first two movies grossed 1000% of their budget. The rest never grossed more than 3-400%. Disney doesn’t have an incentive to continue the prequels and sequels, especially not with the convoluted continuity involving the engineers (new space jockeys) and drukathi (old space jockeys). Either they will start an alternate timeline from Aliens and declare everything else as Legends-style non-canon, or just reboot everything from scratch to avoid being constrained by old continuity.
I hope they will bring Blomkamp and Cameron back to work on Alien V. Sure, it’s definitely pandering to fans and fan theories (especially the concept art of egg-morphing and deformed aliens hooked to alien machines), but letting Ridley Scott go in his own direction didn’t work out so well.
Did you know that Ridley originally wanted the alien to kill Ripley on the shuttle and mimic her voice? He needs other people on the team to keep him in check!