Greg,
We were both looking on the wrong direction here, focusing on the current malvertising symptom while the deeper issue was occurring inside Microsoft itself.
After Thursday's announcement and it's obvious side effects, I did a quick search today regarding layoffs and found the second article below.
Windows boss Terry Myerson leaving Microsoft amid huge reorganization - Business Insider
Microsoft Layoffs in 2018 Impact Windows and Device Group
"Although the most severely impacted part of the business is the Windows and Devices Group, several other divisions faced job cuts as well. Employees were shed from product groups like “Bing”—the company’s oft-maligned search engine answer to “Google.”"
Since the MSN moniker is really just a legacy label that's likely now nothing more than a logo, I'd guess that most of the remaining portions of this advertising were driven by the Bing group mentioned in the previous excerpt. If that group was already being reduced earlier this year before the announcement last Thursday, then I'd bet there's no plan to retain these legacy components for the long term, since as I mentioned these were nothing more than a reformatted set of 3rd-party news blogs anyway.
So I think that assuming Microsoft truly cares what happens to these pages is the mistake here, while it's the larger issues of where Windows itself is really headed and what form it takes in the future of Microsoft itself that's truly of concern at the moment.
"Terry Myerson, the executive vice president of Windows who has long been a leader at Microsoft, will leave the company "in the coming months" as part of a big reshuffling of executive leadership announced on Thursday. "
So if I'd taken the time to research deeper at the beginning, I'd have realized this entire discussion was pointless from the start, except as a warning that Windows users should assume that ad blocking is now the only effective method to protect yourself from malvertising on the legacy Windows platform.
Rob