Standard boilerplate terms of service for the US, at least:
You will only use the Services for your personal, non-commercial use, and only in a manner that complies with all laws that apply to you.
And for the app:
The Application is licensed to you on a limited, non-exclusive, non-transferrable, non-sublicensable basis, solely to be used in connection with the Services for your private, personal, non-commercial use, subject to all the terms and conditions of this Agreement as they are applicable to the Services;
That said, US law has been pretty clear on this that the end user can contract with someone else for installation and maintenance services on these types of products and it still counts as non-commercial. And people who do that type of installation work can recommend that their customers buy specific products that the installer will maintain without violating the license.
Normally (although you should check with a legal advisor) there’s no problem with a landlord using these products in a building that the landlord owns as long as they are not charging extra for the product. That would also be true for a hotel or an office building.
There have been both multiunit landlords and professional installers working with smartthings from the very beginning. (I can’t say whether it’s a good idea or not, but they certainly have existed.)
So again, check with a legal advisor for any specific cases, but in general, I can certainly imagine situations like the one described in the first post that would still fit the current terms of service, at least for the US. I don’t know if it’s different for Canada.