I quite concur with @foxmoth: it is up to everybody to do all they can to ensure safety; and while we may trust the commercial operators to put in a big effort, not the same can be said for all recreational pilots/owners/operators.
How does the 'big effort' square with filing a flight plan in Class D and higher Class airspace from gate to gate, but voluntarily changing in flight to 'point to point' in Class E to save fuel?
Agreed universal ABSB fitment would make their life safer. If the airlines would put together a fund from their fuel saving to fit my glider with appropriate equipment, they are entirely welcome. Or why not just use the airspace provided for their exclusive use?
