> feed them corn and soy which is totally not their natural diet

Yesterday I saw a documentary (Zembla) about the veal industry in The Netherlands (largest in EU, which exists mostly for export, also to US and China).

Terrible conditions for the calves, but what most surprised me is that the farmers only feed them with milk! This way their meat will have the light color associated with 'fresh, young' veal.

From the 1,500 veal producers, only a single one is biological, giving the calves proper food. Result is their meat is red in color.