When people build things and give them names, capitalize the names. Capitalize the names of buildings, monuments, bridges, and other landmarks.
Empire State Building, Statue of Liberty, Brooklyn Bridge, Grand Canyon
For the same reason, capitalize the names of cars, trains, airplanes, ships, and spacecraft.
Model T, Orient Express, Concorde, USS Enterprise, Atlantis
When people start a company and give it a name, they then put the name on their products. Capitalize the brand names of products, but not the word that tells what the product is unless it is part of the product's name.
Kleenex tissue, Nike sneakers, Ford cars (Ford Mustang), Sony television