For quite a while I’ve been creating demo tenants on https://demos.microsoft.com As a Microsoft Partner it is easy to create a new tenant
Even when clicking on the Industry section where you can get tenants for specific industries such as Higher Education, Manufacturing & Resources and Retail I got the same message:
The content pack is temporary unavailable while we replenish our supply of QuickTenants. Please check back in 24 hours
Well that is a bit annoying. I guess it’s better not to create these tenants on a day that you really need a new one.