This from Autosport:

http://www.autosport.com/news/report.php/id/60218

I don't know what's wrong with how things used to be. If a manufacturer entered a model that had fundamental flaws as a racing car, they just had to put up with being unsuccessful. Yet today they expect to be helped by whichever championship they are in. We've seen this with the Abt Audis in the DTM, Chevrolet in the WTCC, and now SEAT in the WTCC as well. I hope the BTCC continues to resist SEAT's pressure on this point.

The trouble is that every championship now needs as many manufacturers as possible, hence the examples of bowing to the teams' demands. Personally, I'm uncomfortable with it.