Earlier quoted context omitted.
You are conflating two completely different properties of MS Office: (1) product functionality (e.g. macros) and ecosystem, and (2) proprietary file format lockin. I'm objecting to the latter, when it is a virtual monopoly, and I'm suggesting that the vast majority of Office sales are for the latter reason, not the former.
So, by extension, the vast majority of Photoshop sales are due to PSD lock-in? And the vast majority of Apple sales are due to iOS lock-in? I'm seeking a distinction here. If my statements about Adobe and Apple are not true, what makes Microsoft different?
Apple and Adobe do not have the segment market share that Microsoft does with Office. More importantly (to me), people buy Apple and Adobe products because they want to. People buy Microsoft Office because they have to. And they feel they have to not because Office has functionality that is so unsurpassed to help them get work done, but for one reason alone: file-format lock in.
As if, and again this is hardly original with me, a private company controlled the protocol to make phone calls and forced you to buy their (overpriced, crappy) phones to access the phone network.