SAP is primarily an Enterprise Resource Planning (ERP) product. Salesforce does not have an ERP product.

ERP’s are operational efficiency tools that companies use. Core components of ERPs are financial (automating accounting), inventory, transportation management (finding the best route to get physical products from China to the USA for example), amongst other modules.

Some ERP companies have CRMs (Oracle Netsuite I know for sure does), but again Salesforce doesn’t.

Probably? I only mentioned it because it's far too common for small companies to become dependent on Salesforce, only to then be priced out of the platform as their costs balloon with their needs.