Well it is all about politics and money.
When Dennis Poore's Norton Villers acquired BSA _Triumph, with Government assistance he did one of the greatest asset strips in world history.
He was then the controller of the BSA trade mark and ardent that it should dissapear forever save some one wondering "whatever happened" so naturally he never allowed the trade make to be used on anything let alone a motorcycle.
BSA was one of the UK's largest companies, fully vertically intergrated and very diverse and everything that was making money, Poore "stole" for book value which made his private company Manganeese Bronze one of the top 200 UK companies. Leaving only the loss making motorcycle division with NVT to suck up tax payers money while he made hundreds of millions. How dose that theory of capitalism go " privatise the profits and nationalise the losses" .
If every one who currently owns a BSA went out and bought 2 "new" BSA's and if the new company was running at a 100% profit ratio then it would not last 2 years.
The name BSA means nothing to any one under 40, our youngest member is 43 ( oldest is 85 ) and the mean age is 52.
Very few of us would actually buy a "new" BSA unless we wanted to burn up a big super payout. Our sons & daughters lust after Honda 4's or H1 or Z9's or SS750's so there is no market there.
Retro styling and even worse naming is a very difficult thing to do, look at what happened with the B 50 Gold Star or the B44 Shooting Star, both spectacular failures due largely to the target marketing rejecting the reused name