As a thinking experiment, let us consider that on the 1st of January of 2025 it is announced that an advance making possible growing any kind of animal tissue in laboratory conditions as been achieved and that it is possible to scale it in order to achieve industrial grade production level.
There is no limit on which animal tissues can be grown, so, any species is achieveable, only being needed a small cell sample from an animal to start production, and the cultivated tissues are safe for consumption.
There won’t be any perceiveable price change to the end consummer, as the growing is a complex and labour intensive process, requiring specialized equipments and personnel.
Would you change to this new diet option?
There are various different vegan philosophies, some basically won’t consume anything that had anything they view as animal exploitation anywhere in the process
For example, to some of the more extreme forms of veganism, if your vegetables, grains, or other plant-based foodstuffs were hauled in a cart by a horse, or if you used an ox to pull a plow in the fields while it was growing, they wouldn’t consider that to be vegan.
Some also object to honey for similar reasons.
Many, probably most, vegans don’t go quite that far, but they’re definitely out there, and everyone draws the line at a different place.