The captel phone is good for late deafened people because only half of the conversation is printed out and you can just speak back.
There are plenty of pizza places, restaurants, and companies, etc. that do not have any type of online interface and in those cases the only option in the past would have been to use a TTY or relay. The Captel phone has been a great tool, and the technology is more recent than you think.
Hah! Who's the oldster now!
And Alicia, I only did a little searching on the net, but I don't think captel is available in Canada.

time to petition your government!