That's probably one of the main reasons, but not the only one. The Escort Cosworth was based on the European Escort, which is a completely different car than ours, and it would have to undergo extremely costly crash testing and federalizing to be allowed for sale in North America. Also, the Cosworth Escort was a homologation of the rally Escort, and, although it's slowly growing in popularity, the WRC is diddly squat in North America. Back in 1993, very few Americans would pay $30,000 for a fast Escort when they could get their beloved 5.0 Mustangs for cheaper