FFXIV has been following the same formula for a decade, with its lead director encouraging players to try other games when they feel bored, rather than providing more content to keep them engaged. Each new piece of content has required longer patches. It's no secret that the game could fall back to pre-Shadowbringers numbers and still remain financially sustainable for Square Enix.
That said, Dawntrail sales were still a success, despite a significant drop in subscription numbers. Patch 8.0 will mark the first expansion released after a main story flop, which has traditionally been the primary reason players buy the new expansions. Meanwhile, many long-time players have been driven away by changes unrelated to the narrative, such as the removal of long-term grinds and the oversimplification of content and job design. Losing the MSQ as one of FFXIV's key strengths feels like pulling a rug out, and the full consequences of that may only become clear in 8.0 and beyond.