Plant milks need to become way cheaper than currently 5x the cost for me in India.
So you have 3 choices there:
Examine your time management as you will have time that youre actually just procrastinating or pursuing bullshit that doesnt really matter as much as you think. (Dont lie - Very few people actually dont).
So you have 3 choices there:
It takes 10 minutes to make a batch. Less time than will take you to walk to a shop (see here for a simple recipe/process: https://minimalistbaker.com/make-oat-milk/ )
Pay 5x the cost for plant based products - is your time really worth that much in exchange for the convenience?
Keep drinking disgusting cows milk.
These are the kind of reasons why vegans will never be able to convince people. Go on. That advocacy is surely working.