While M365 is designed for business, it lacks an integrated viewing option for 3D Models (Revit, Tekla, SketchUp, IFC, DWG) So you are good to go when dealing with word documents and excel sheets.
You can even work together realtime on ‘business’ documents.
Not a significant difference with Google ( Business suite has ‘shared drives’ , btw) But the calculator might wanna use excel instead of sheets. When you are building, you do use more than a hammer, don’t you?
I would argue that even the smallest business should have access to the Microsoft apps and Google, it’s a bare minimum.
But If you wan’t to take it to the next level regarding BIM, I would suggest to inspect Trimble Connect a little bit further, especially when it comes to collaborating with sub-contractors or clients…
It is not ‘just another storage’, in fact, it warns you if you read the EULA.
Even if the storage is on one location in the cloud, temporary internet dropouts might be responsible for not fully synchronised data. (eg. when you have the Google filestream app running and close the lid of the laptop, It might not have been fully uploaded, resulting in what seems to be a missing file in the cloud storage)
Regardless, you need to have a system and an Admin that has control of the process.
Even before setting up a project, you get control of the workflow for this or that specific project. Trimble Connect offers ‘releases’ , but also workflow extensions like the metadata on files )Who has approved what document when, etc) Customised 'Property sets, attaching external links or internal documents to objeect in the 3D Model., Sharing Models or Views with clients (get approval instantly!), checking and registrating all activities etc.