I just did a simple test.
Restarted BIAB and checked what addon's do I have : 'You have all of the Style disks (unless we've made some new ones)'.
Status : the 3 missing styles are not detected.
Everybody will make its own conclusion.
It would be great for PG music to verify user purchase data in a more up to date fashion. In other words, do away with the "unless".
PG music knows what it has sold, knows what I have purchased and could confirm what is on my machine.
Quite possibly it could be a revenue enhancing feature.
After over 2 decades of purchasing BIAB, I would like to know I have access to all I have purchased.