Please note that Microsoft has reconfirmed its dedication to the desktop version of Access:
References:Access Desktop databases (.ACCDB files) will not be impacted by this decision. If you’ve used previous versions of Access, these are the databases you’re already familiar with, and you’ll continue to work with files you’ve created in the past. Desktop databases have all the powerful features, such as VBA, that has made Access such a popular way to run a business. We will continue to invest in Access Desktop databases to expanded data connectivity, management, and developer features.
Updating the Access Services in SharePoint Roadmap
Export Access web app tables to SharePoint
Introduction to Microsoft PowerApps for Access web apps developers (downloadable documents)