Things would be easier if we can find cheap, healthy (most 'meat alternatives' are highly processed food, which is not better than meat) alternative that people will accept.

1. Nutritionally, you don't specifically need meat alternatives. For protein, even just peas will do (yes, there are other things in meat as well, this is an example). For the most part, people just need to learn to cook differently.
2. Tofu is an example of a food that (in its pure form) is really healthy, not processed much, inexpensive, and which is often counted as a meat alternative.
3. Even the highly processed plant protein + seasoning types of food tend to be more healthy than animal meat, provided the seasoning doesn't include too much salt/sugar. (They also tend to be less healthy than just eating the actual plant product though.)