Many ISPs use limited-duration promotional rates to sign up new customers, after which a discounted rate returns to a higher rate. We can debate the pros/cons of that practice as a marketing tactic, but that's not the same as the unfair charging practice described in the article. As far as I know, Comcast does not engage in forcing customers to rent equipment.
You’re right, I confused it but my point still stands.
What I really meant to say:
Not really because unlike c-u, the c-a c-k combo deletes the whole line, while I actually wanted to delete only the part of the line up to the cursor. My workaround is ⇧⌘← followed by Backspace but that always feels a little awkward to me.
I can confirm that C-u has the behavior I described for me. Running Mojave. It's very useful at times in terminal as a sort of "reflected" C-k shortcut.