For my mind they also haven't really traded on the 'individual security hero come to save you' person(which Norton definitely did in the early years).
There are famous examples in advice columns, sort of. I don't know that any of them have ever been written by different people at the same time, but they've maintained stable personas and names even as the writers have moved on or died. The original founder of the Dear Abby column was famously the twin sister of the second iteration of Ann Landers and they feuded for the rest of their lives over it. They're both dead now but the columns go on using the same byline name.
Whenever I read a Wolfram blog post that floats to the HN frontpage, I'm never certain if the post is entirely the effort of just Stephen Wolfram, or is a group effort.
And, for those who don't know, he is from Bristol, England, the home of the band Massive Attack. I've been digging their music lately, especially their songs with the late Sinead O'Connor.