Always felt like the reception and flop of the order 1886 was the final nail in the coffin for traditionally linear games in the SP space. Leading to either wide linear titles or open worlds. Ofc traditional linear games that had already been announced came out later, but The Order in particular felt like the end of that particular market trend.
i'm not sure I agree completely though I see where you're coming from. I think the trends were already moving more towards that in general for quite a while from last gen to now.
I don't think the problems with The Order and how it was received were directly related to it being linear either but I wouldn't trust publishers and the purseholders to necessarily understand that. The problem was it was so linear to the point of being on rails honestly, it recycled a major boss fight verbatim at least once, possibly twice (I don't recall), it was comically short (I beat it in around 5 hours without rushing the first time) and had a couple of guns that you couldn't use out of very specific encounters which only had like maybe 20 to 30 enemies in them so it never felt like you got to play around with the combat. It was a very bizarrely designed game in many ways that was pretty thin on depth and content. That it was pushed as a high profile exclusive made it all the more odd that it came out the way it did. Beautiful art design and visuals though.