I hate the stock market. One idiot screams that the company is going to bankrupt, and the world of knee-jerking day traders SELL SELL SELL. Prices drop. It's a stupid domino effect to judge a companies true performance by, and more so, it's stability.
At least in the US, H-D owns the cruiser market. Most non-motorcyclist types refer to all cruisers as "Harley's". Just as some people still refer to soda drinks as "Coke" even if it is a Pepsi. You only get that kind of product recognition by being the oldest. H-D riders are very loyal, to a fault even.
Before I would get the marshmellows out for the roasting of H-D, I would expect to see them lower MSRPs in a last ditch effort to compete in a market where their name is not enough to justify their price. Also they would probably sell the licence for their clothing line, in an attempt to re-focus on the process of making motorcycles. But they still sell, some would argue better than ever, so their name is more than enough to get them by at this point.
I personally like sportbikes, not cruisers, but I really don't see H-D falling anytime soon. Just my 2 cents.