[Santosh83]

It's not that MS couldn't. I am sure they have the resources, had they really wanted to. But they just didn't see the incentive since their own browser, IE, was well and truly dead. Capturing the market again starting from level zero just wasn't attractive enough. Instead Chromium offered them the best of both worlds. No need to do the grunt work, but they can now still bundle their browser with their OS and try to grab usage share from Chrome and Firefox, by offering the added attractions of deep OS integration and installed by default. If Edge ever become a serious competitor to Chrome then MS's influence within the Chromium project and web standards will become bigger and bigger, serving as a soft obstacle against absolute Google monopoly. They also always have the option to maintain more and more parts of the Chromium code base independently.