I have mentioned this before somewhere in the past.
If you had an online version of Biab where people can come and enter chords into a chord sheet in the web browser (or upload ABC XML SGU) to create the track/s they need.
Like an online studio, if they need them tempo mapped they can upload a midi file with the tempo map.
The styles, instruments and drums can be preview online as they can now.
It could work similar to how bbserver.exe works serving the Android/iOS app.
The tracks are generated and played back with a watermark for preview or downloaded as an mp3 for testing in their DAW with their other tracks,
if they are happy with the results they can add them to the cart to download without watermarks.
This way those that don't have Biab can try it out and those that would not use it enough to warrant buying it can just buy the tracks and download instantly. So you have the option of buying Biab or hiring Biab.

Biab Track Injector for Reaper
Free Biab Chord Picker Tool