I think leaving lots of room for the aftermarket is a super wise marketing move. Cost of entry lower and tons of press as each upgrade comes out.
I think it also builds huge brand loyalty. I remember back when GM products were everything to most car guys, primarily because the aftermarket was there in spades helping them build their dreams. Being a Ford guy was a tough road to hoe for a long time. Thankfully SVO came to the rescue and the aftermarket followed.