Just because he appeared in an advertisement doesn't mean he would have to have had any share in the company.
>>Another story...when I was growing up in London, Ontario, one of my friends came up to me and said "Scotty is at Doug's house having dinner with his father". It turns out Doug's Dad really did go to Sarnia Collegiate Institute & Technical School in Sarnia, Ontario, with James Doohan. What a world. Also, James Doohan was a flight officer in the Royal Canadian Air Force, and lost one of his fingers in combat, fighting for Canada.
>>Also, William Shatner did ads for the Commodore VIC-20, Oldsmobile, MCI Long Distance (the whole cast) and DirecTV. He was recently invested with the Governor-General of Canada's Award for Lifetime Artistic Acheivement.