That's why I said kinda. Strictly speaking, you are right. They don't own your system. However, to me if somebody controls what you do with your electricity I.e export or curtailed, you don't own the the work product of your system.

Virtual power plant model you've described doesn't exist here in New England. National grid has some sort of thing where you can make a grand or two a year if they can use your battery during times of high demand. If I could do it standard off-the-shelf components, I could put together such a system for $6,000 installed but the payoff is in the decade range since we have flat rate power through municipal buying co-op.