I'm not vegan, but what's wrong with turning vegan as a suggestion for an industrial society?

Society isn’t going to change change what they eat unless forced to do so.

Not what I’m asking.

What makes you think your current society won't change in the future ?

Looking at the past, societies did changed a lot. Indeed, "Force" is often used : I'm forced by the law to not use slavery workforce, or to not eat an endangered species.

I'm peer-forced to consider people with disability in the code I produce, but not yet law-forced, although that is probably going to change soon.

I specifically excluded it, if you can’t fathom why I don’t want to get into a holy war about people’s personal diets then so be it.

If you think about it, it's only a good material because we ignore the downsides. If we could put a price on that, the economics wouldn't add up.

You assume everyone has extra 200$ to pay. For someone living in a low wage country, it's hard to pay that much, even if you produce a multiple of that value in theory