According to Mishaal Rahman of Esper, you could soon be able to easily transfer an existing eSIM onto a new device or a fresh Android install. To make the feature even more accessible, Google looks like it may also be working on a system for converting the data on physical SIM cards into eSIMs.
Well this would certainly move eSIMs forward because in many cases with carriers, they treat eSIMs just like physical SIMs, wanting to manage all re-registrations themselves. eSIMs should have made the whole SIM experience seamless and interoperable already.
See Google's upcoming eSIM tweaks put users in control, not carriers
Physical SIM cards are slowly becoming obsolete