Good show for mentioning that. If it becomes commonplace for popular runtimes and languages to be able to load modules and their dependencies at that level, then a lot of arguments for service encapsulation go away.
I think in these discussions, a lot of times people are taking past one another. If I start putting a JRE-targeted application together, I know I can eventually reach for isolated modules if I follow good internal practices, whereas if I'm in Python land it's pretty unattainable.