First off, as a fat guy, I eat any and all food. Meat or non-meat. for instance, I had both a salad and a pizza today.
That being said there is an obvious difference between vegan and non-vegan ice cream. Which is why I will always enjoy my cream-based ice cream. I've yet to see vegan ice cream that costs less than animal based ice cream.
Second off, as a tax accountant, all farmers get subsidies and plenty of favorable tax laws. Some may get more than others to not grow certain food or what not, but the important thing to remember is they are all doing ok in terms of tax treatment and subsidies. obviously not as good as other industry's, like gas and oil, but you get the idea.
Honestly, the answer to your question is profitability. If you can improve the profitability of vegan products, you'll get what you want. Hell, they may even take the spot of meat products. But until that happens, things aren't changing.
Also, I find it ironic that you think I haven't done my research but provide no citation for your own.
what i mean is, assumptions are bad, and don't do any benefit to discussion.