How to Fully Replace OneDrive Sync with Teams Files

StevenC365 We have Microsoft 365 Apps for Business and all our users have Microsoft 365 Business Standard licenses.  

Co-editing files only works with Office files.  It doesn't work with pdf files.

I know we can't drag files out of Teams so what do customers do that use non-Microsoft applications, such as an ERP or Accounting system?  We need those pdfs, which are stored in SharePoint, to be saved elsewhere.  Downloading then using Windows Explorer is crazy.  

"I would sync the folder to your device, and get folks to keep on this device before try to drop them into another fully client side application."  We already do this with OneDrive and have done so for 3 years.  It's buggy and stops working all of the time.  Are you suggesting we have all of our accounting users use the same device?