In today's gaming industry, it's more about strategic partnerships than control. The competition is as brutal as daily innovations or luring the best minds into a dev team. Even if products are properties, i doubt re-selling or hands juggling can make or brake the quality of distributed titles.
Like everything, you gotta be lucky to stay afloat.
And quite ingenious to create value that fits tight in a clearly defined potential market.
Some are better at targeting than others and they certainly won't give it out so easily.
Ask Valve for their new multi-core addressing engine and they'll probably reply; Do your own and better it fast, cuz we're ahead until proven otherwise.
Tough battles are fought in the binary realms with monumental perspectives.