It comes to my realisation that no company originated an idea but employees within it.
Companies may continuosly make profit from products of that idea but the employees grow old and retire. Some leave a heritage to their children some don't have anything left after.
Like pension fund, a patent can benefit an individual more than any other source of income they might expect to have as they grow old in life.
It is wrong therefore for companies to own patents of its employees but should be encouraged for companies to register patents for their employees own benefit. Like they always promise of assistance in terms of pension, gratuity and other related benefits.