I think the worst case scenario, is that FDev may not be able to solve the last major bottlenecks that are holding back the desired optimal level performances quickly enough. Then I guess I would imagine, the game with PC only moving forward could get slower updates like what happened iduring the delay with finishing the ps4 port, extended for over a year and more, also delaying progress on Horizons back in 2016-17.
I don't get some thinking that Odyssey should be a no brainer. The new era starting with Odyssey was pushing and pioneering the "frontier" of open world gaming and simulation again, very highly ambitious, where I don't see any other publisher gamedev firm major or otherwise even bothering to be this ambitious while also having standards to scientific fidelity with over 200k+ stars' data from real life astronomy charting, and plausible hard sci-fi world building (of course with some necessary choice compromises they had to make for game balance and mmo conditions) . Like if EA or some other corporatized game industry giant bought Frontier and ED, they would have b------ized the Elite franchise into something unrecgonizable like stripping away the entire stellar forge sim framework, and slap on the fake starboxes again like most any other space genre sim that always takes shortcuts. The habitable or traveable worlds would likely be stripped down to 50 or so, and no better than something like ST: online, and then dumping the franchise for good after milking a product sales cycle of only a few years.
The Elite franchise survived and continued on after a 10-15 year hiatus since Elite 3:FFE, and even if dev slows down until hardware catches up again for working with the new set of complexity( like what happend with FSX's early years, then for ED's scope of combined galatic scope + ship sim gameplay + landable terrain + on-foot with Odyssey, and unprecedented working mix on hundreds of thousands of settlement instances and a continuing working galactic scope all working in real time so adding existing cpu cycles on top of it before Odyssey was added on it ; and it's just amazing now ships of npc's and pc's can all be in the same instance whilre a firefight is going on in an Odyssey settlement instance. ) , as long as the vision survives, ED could very well have another round of next generation updates in 5, 10 years from now just as what happend from '95 to '12-15, and perhaps console would even make a comeback. I think ED's history is all too often plagued by regency bias , like every generation of new players , and immediate vocal customer reaction negativity with very little patience and appreciation for the ambitious vision they've pulled of and will likely continue to do so continuing years from now.