How much of the differentiation here is because Microsoft is innovating better versus simply their size and ability to use existing sales pipelines and bundling

How much of the differentiation here is because Microsoft is innovating better versus simply their size and ability to use existing sales pipelines and bundling to push these types of features/products? This article even includes a Teams versus Slack graph in it - I can't help but feel sorry for smaller players who will see a gigantic incumbent unfairly eat their lunch without performing the hard work of innovation in the first place.