Microsoft have done this in the past. They actively eat the browser market share with IE and left it alone after being the monopoly in web browser. This forced Netscape to become Mozilla. They also tried to be the gateway and believe OS is the gateway for all program and was left in the dust with web app and web search engine. Their past modus operandi was always to stay a monopoly not to create a good environment for developers.
And I think it's a good thing to keep in mind because microsoft's past actions we should all be wary and keep in mind when we decide to do anything with Microsoft.