At the very least, buy large jugs of purified water and use a permanent refillable bottle. It still creates plastic waste, but it’s a lot less than pounding down small bottles all the time. It’s also much cheaper, and if the bottle is vacuum-insulated, more efficient and enjoyable.
Small plastic bottles have their uses in some situations, but buying them all the time as your main source of drinking water is just silly.
There should be an exception: If they want to still say “buy” or fail to comply, they will need to refund the full original purchase price if they ever shut down the server.
Next do planned obsolescence and products that are designed to break a week after the warranty expires.