I think delivery is a bigger deal than portability. There are many ways to make applications portable in 2017. The big deal is that browser SPAs don't need to

I think delivery is a bigger deal than portability. There are many ways to make applications portable in 2017. The big deal is that browser SPAs don't need to be installed, they just run when a user clicks a link or loads a page while browsing the web (something they already do anyway).