If you use a Microsoft work account to set up an Azure Sphere tenant and then use that to claim your own personal Azure Sphere device would I be right in thinking that, if you change work accounts (e.g. if you get another job), you could end up not being able to use the Sphere device?
Surely your ex-employer could just delete your Azure Sphere tenancy? Even if they don't, will you at any point in the future need your Microsoft work account credentials again to use the Sphere device?