The lack of competition mean the business is not as much profitable.
The F32T8 2500lm (that is only my guess) output is quite too large for a dwelling room's lighting, there the ~600..1000lm packages are quite a maximum there.
Well the F32T8TL930 only output 2000Lm initial / 1860Lm "design", so not really too bright for large residential interiors, plus they mixed well with incandescents/halogens.
And for a shop lighting the 9xx is quite an unnecessary luxury - there the regular 840 would do a better job.
Luxury lighting! If I had a shop, you know what I would use in it
Moreover the more intense lighting need rather higher CCT (otherwise it look unnaturally yellow), so I would guess the 940 or 956 would be of more use than the 930.
Bot I do not know anything about the success of those, though (from any maker)...
I broadened my F32T8 search, and found some references to a Westinghouse F32T8 TRITEN 950 (98 CRI), but those seem discontinued too.