Nope
.... Microsoft would be mad to cut off AWS and Google Cloud – sending hundreds of thousands of developers scurrying off to an alternative and undermining its own valuation of the company
Why would they worry about the valuation? It's only shareholder's money they're spending, and on balance everything they've ever bought before has been turned to slag in a few short years.
Moronsoft bought Github not for any real strategic purpose, plan, or gain, but because Github was available to be bought. In every corporate or bank boardroom M&A is always much preferred as a glamorous and welcome distraction to the tedium of making better products or serving customers better.