I only really feel qualified to answer the first and second questions you pose to the parent: Firstly, we live in a new age, home computing as we know it is le

I only really feel qualified to answer the first and second questions you pose to the parent: Firstly, we live in a new age, home computing as we know it is less than 50 years old, the industry is still growing exponentially and finding its feet, but it is like any other industry, over time, giants come and go. Take for example the investment bank Goldman Sachs, when the news came out, the headlines said the bank was "too big to fail" and only a government bailout saved it, but now it is as a company barely a shadow of it's former self. Even the biggest companies come and go, normally at the whim of the consumer, it's true that these companies control a large part of our mentality when it comes to buying and selling, advertising and our opinions and feelings towards anything they can relate to a brand in any way, but all it takes is to lose favor with your customers and you will soon be finding yourself laying off thousands of staff. Simply put, these companies will very unlikely always be giants, I would guess that in 100 years only 2 of these companies will be a house hold name (if they are lucky, or make good business choices, whatever you attribute their continued existence and fertility to) and in 200 years, most likely one, or none. That isn't to say that other giants won't step up in their place, likely also without the aid of incubators, but to use a simple anecdote, you can bring up a Lion in captivity, and it will grow up to be a perfectly healthy Lion with a nice mane and big, sharp teeth, but if you put it in a cage with a Lion who had to fight it's way to survive in the harshness of the wilderness, normally, the other Lion will tear it apart. Simply put, companies which have already fought hard battles to get where they are, will be the ones to fight however hard it takes to stay in that place.