I don't know if oil preferences have shifted with time on the macro level but my opinion based on what little I see is that they haven't.
I'm under the impression, I stand corrected if wrong, that the greater bulk of oud oil consumption remains in the ME. When I look at products in that region, with that region as the bulk of its target and in discussion with the few I know from the region, I see very little if any change in preference.
When I look at the small, artisanal, niche vendors that we favor, I don't necessarily see a change but rather variety. I see Ceylon No.1 and Borneo 5000 Pearl offered alongside of Hud, Mahabali, Chamkeila, Hudhayl, Dr. Hindi, Bhutan No. P, Shuayb, etc.
When I look here on the board and I see psychopatic madmen like
@kesiro and especially
@bhanny (he doesn't know that he's my hero) who enjoy the full spectrum of oil favoring animalic, musky Chinese oils like Hainan 2005, China Pearlyang, Yunnan 2003, etc. I know that beautiful and "challenging" oils are still the mainstay.
When I think about the western market I say, "what market"? IMO the west has not yet embraced pure Oudh oil on the macro level. Are you referring to the "oud" compositions in modern designer and niche perfumery? If so, even within that small audience I see perfumes like Bond's Harrods Oud, Dior's Leather Oud, Montale's line, etc. touted as the best and they are perfumes that are trying to capture a more "funky" aspect of oud oil. Friendlier "oud" perfumes like Tom Ford's Oud Wood and Acqua di Parma's aren't discussed as much.
The funk is like the force, may the funk be with you.