Can you elaborate? None of these Virtual Machines go away because so many people run them and
can run them, including yourself. You can branch off the current state or any prior state and run/execute it locally at any point in time, without needing the resources to run the whole blockchain. This is enough for you and your community/clients to have the data to move it all somewhere else, if necessary. If you need all the prior states for some reason, someone will have it for you to bootstrap from. What would stop working?
and when you mean latest scam ... how? all - or all major - blockchains have had this feature since day 1. reading is free, writing is not. now all the nodes in most networks can function as event-driven compute services, similar to aws lambda and other products, except reading and bandwidth is free.