When I was at the Electric Wood workshop a few years back I was amazed at how tiny an operation it was - really just a small workshop. I didn't see Paul and the guys there driving Rollers or Ferraris (unless they were parked hidden behind the lockup.....) so I don't think they're making a fortune in the bass business. Undoubtedly keeping it small is what preserves the desirability and cachet of the brand, and I'm sure it's deliberate policy not to expand or outsource and so devalue the image.
I think a good few pros and players do still use their basses for what they were intended (Bilbo and myself for two), but yes; unfortunately they seem to have attained the same mystique as pre-CBS Fenders - rightly or wrongly - and increasingly will tend to go straight from the workshop into a bank vault, unsullied by a mere musicians fingers......
If you fancy a spin down to S Wales post lockdown Andy, you'd be more than welcome to try out my pair of Mk 1 Customs ( fretted '82 and fretless '85). Hopefully there'll be another BC-er closer though!