It maybe does not mean that much, but at least code memory can be shared among electron app instances if it is deployed with shared libraries by a distribution package manager e.g. https://www.archlinux.org/packages/community/x86_64/electron...

Eventually if electron gets popular enough you will have only one additional browser per system - the linux distriburion packaged shared electron. (e.g. https://www.archlinux.org/packages/community/x86_64/electron... ) (not sure but even that could use a shared choromium lib - or am i wrong?)

It is the same as having shared GTK or QT libraries (both with embedded web engine BTW - so plenty of engines already), or having a shared global python deployment with shared global packages (from these you sometimes need two: v2 and v3)

So you will have one extra component per system.

In Windows world maybe you will have one additional electron component per app, but there, it is the "normal" way (you have qt dlls in every qt app etc...) anyway, so not much difference compared to other frameworks there too.