My first BIAB was version 4, and I had Cakewalk Pro also. Fun post, Pat.
Not long after, I noticed Notes Norton's ads in Recording Magazine or some such for a "better band in your box".
I find it interesting that so many early adopters of BIAB are still active users! How many products from the early days of computing still exist at all, let alone still have faithful users who have been on board from the beginning?
as a tie-in to another thread about market share: PGMusic's ability to stay relevant in a changing market probably has a lot to do with their longevity (and therefore cumulative global user base). They outlived a lot of their original competitors, and they've parlayed their unique approach to making music so that the survivors haven't made them irrelevant.
The ability to export tracks directly to other DAWS was a brilliant idea, because it eliminated the idea that you only need one piece of music making software. By positioning itself as one part of a multi-faceted system of music creation, I think PGMusic pretty much carved out a niche that has become unassailable.