Animal products are incredibly harmful to the climate and are inherently wasteful.
Those corporations get their money from people like you.
Yes regulation would be the best to stop them but you know that's not gonna happen any time soon, especially when everyone refuses to change their own habits, politicians aren't gonna force through regulations that get people angry because they want their steaks.
Why do you want to continue to participate in something bad until it's legally not allowed anymore?
Why not do what you can (stop consuming animal products) while also advocating for regulation and political change?
What does holding evil corporations accountable look like if not refusing to give them your money?