You know what I miss? PDAs. 20 years ago I had a PDA with physical keyboard and WiFi running Debian. It wasn't even that expensive. Today those simply don't exists. From time to time something gets released on Kickstarter but it's usually very expensive. What happened? I would expect that with all the advances we would have more gadgets like this today, not less. Is it really matter of scale? I'm sure those old PDAs weren't selling in millions. What is it?