I love how any interaction with a company means we enter into a one-sided contract with them and own nothing, despite spending money. Don't like it? Just go live in a cave!
If you are making a purely legal argument, then you are on shaky ground, and there are limits to what is considered a valid contract (especially in the EU), and what terms it may contain, but you might persuade a judge.
If you are making a moral argument, it is indefensible.