The issue is that yes, property graphs are very popular. And also yes, they create yet another data silo just as the old sql databases do as you make a custom

The issue is that yes, property graphs are very popular. And also yes, they create yet another data silo just as the old sql databases do as you make a custom data model each time. SPARQL and RDF are powering the new decentralized web with a global interoperable api in the form of Solid (by the inventor of the web) - you'll likely be hearing a lot more about this as it rolls out commercially in the coming months