It's not copyright infringement either. They are basically looking at your user agent features, country or whatever to sell you subscription, it's like upsellin

It's not copyright infringement either. They are basically looking at your user agent features, country or whatever to sell you subscription, it's like upselling or even freemium. It's weird that people even entertain the idea of calling theft or copyright infringement the act of not going through someone's silly selling technique.