[tkk23]

You have forgotten that all of those cows will already be killed, with a profit.

[Retric]

Not everywhere and especially not anytime soon. India has more than 3,000 institutions called Gaushalas maintained by charitable trusts that care for old and infirm cows. It’s a whole religious thing.

Also, enforcing rules isn’t free. Trying to enforce a cow ban would get really expensive.