Fair enough. However, first of all, it's still in beta. They’re likely using it to gather feedback on its performance. Also, there’s nothing on the site that says it will remain free. Considering Mozilla has introduced paid services like VPN, and given the cost of running LLMs, it’s unlikely it will stay free.

Also consider that some free use, for example 5 summaries per hour or whatever, is a pretty basic offer for any kind of software, not just LLMs.