Competition, they are now quite nervous about that in the States. Harley-Davidson sales are steadily declining. Due to the aging of the population. Plus the fact that for the public there is less and less difference between the Real Harleys and the most kewle Japanese V-twins. And the youth has not yet en masse to heart the new, small Harleys made in India.
But Harley is a famous survivor brand. So it won't go that fast
And the American eagle is of course a strong logo.
Jos Hammer of Hammer Motorsport proved that you can also make beautiful Japanese eagles in Steenwijk. In that company, the Hammer brothers are usually very technical with motorcycles and engines, but the eagle that is now going to a museum is an aesthetic tour de force.