Maybe you should be their marketing director since you're apparently more competent lol
Maybe you are too young / ignorant to remember the disastrous FoMoCo takeovers of Volvo, Jaguar, Landrover and Aston Martin?
Chrysler / Mercedes failed "merger"?
Chrysler near bankruptcies?
GM's decades of losses on the European market (OPEL and Vauxhall)
GM's chronic and failing atempts to sell Caddys and Chevys in Europe
GM's totally failed takeover of SAAB?
Hummer, Plymouth, Oldsmobile, Pontiac, Mercury, Saturn, all failures (That's quite a lot of brands actually....)
etc etc
USA can do much better when it comes to quality management. Often the wrong people end up in boards of the big three....
Competence does not seem to be a requirement
(But they always blame imports, politics, environment, currency exchange rates, economy etc etc)