I hope it continues. I've been caught in a bind twice in my career when Microsoft offered their product on a non-Windows platform and once it started to develop critical mass, the platform was dropped in favor of Windows only. (FoxPro being one example.)

I obviously have no idea what went into the decision, but it felt like it was an attempt to get people committed to the product then strong arm them to Windows.

Even today, for mainstream products like Excel, they still hold back key features from a major platform like OS X. (E.g., https://support.office.com/en-GB/article/Compare-Excel-2016-...)