On a personal note I have to say (and this doesn't express the opinion of HistorX as a team, just mine):
We don't have exact figures but I can assure anyone that A LOT of people has purchased GT Legends to play this mod. These units wouldn't have been sold if this mod wouldn't have been released. And frankly I feel very proud of us for doing such a good marketing campaign for GT Legends :) Frankly I haven't heard/read of anyone regretting buying GT Legends to play this mod, and that probably means we did a proper homage to this sim.
And yes, that has happened even when the DVD/CD check can be overridden. But let's no forget that there's no infallible copy protection system around (including GT Legends' Starforce). If you expected that a group of amateurs could do better than real companies with real money think again. Frankly It felt like trying to reach the Moon without any help. But we did our best and without any support to do it, and it didn't turn out that bad, did it?
I think that Simbin's decision is not the best to keep a game like this alive. Let's no forget it's quite old now, despite I consider it among the best ever developed and it's still more than nice and fun enough to be played. If we had received some help from Simbin (or whoever owns the rights of GT Legends now) to implement an improved DVD/Steam check for this they may get more units sold, and these nice models would still be around a good amount of years.
But it's up to them, so be it :)
Ps. This doesn't mean these cars will never appear in a project made by HistorX. But as they would have to be created from scratch it's quite possible that you won't ever see them together again in any project made by us. That would be an enormous work to do. It took us five years to develop Historic GT & TC, so even with the experience we have now I can't imagine how many time would take us to create again all these GTL cars from scratch without any help.