It doesn't generally play out that way. Buying the market is a short-term play, and isn't sustainable. PayPal beat the other payment services because they figur

It doesn't generally play out that way. Buying the market is a short-term play, and isn't sustainable. PayPal beat the other payment services because they figured out the fraud problem. Google beat other search engines because they brought more relevant results. The market, meaning the aggregated mass of consumers, chooses which product is best by using (and usually paying for) the product. That product is the winner. Competition is what drives the individual players to improve their product in response to the market. Without that you have a command economy or a monopoly, both of which are notoriously inefficient and un-innovative.