Capitalisation is the difference between "I had to help my uncle Jack off a horse.." and "I had to help my uncle jack off a horse.."
RE: if you were a capitalist If you were a real capitalist you may exploit the opportunity for setting up a horse demounting service to provide Uncle Jack with the ease of travel twixt back of horse and terra ferma, all for a reasonable charge and available at his convenience * weekends, public holidays and after 6pm may incur a premium.