You _can_ use it for a minimal period without cost.

As for the normalisation argument, if there's a common understanding that "free trial" means "X months free followed by being charged", then that's what free trial means.

> if there's a common understanding

Its only a common misunderstanding with these tech companies.

If I had a free trial with a sports club, or many other things, they will not charge me at the end of the trial. They will ask me if I want to join.

If I take a car for a trial drive, they won't bill me the entire price of a car if I forgot to mention explicitly that I don't want it after I return it.