True for motorcycles, jetskis, skateboards, rollerblades, road bicycles, downhill mountain bikes, light/ultralight planes and helicopters.
There is very very little left to invent for the aforementioned vehicles and design is mostly forced by the physics of the envioronment they operate in.
Figured I'd share something pertaining to the finances of stuff as no doubt lots of comments will focus on the stock/bond/real-estate market.
When angel investing you'll need 20 deals to finally get a big winner.