Interesting thought. I think this was also true in the past for many people: Oracle Sysadmin, SAP System Consultant,... You can build your whole career special

Interesting thought. I think this was also true in the past for many people: Oracle Sysadmin, SAP System Consultant,... You can build your whole career specialising in the stack of one vendor. Maybe today and in the future there will be more jobs like that: AWS Solution Architect, Salesforce Technical Consultant, ...