They are not the new first world, they have the largest population numbers WHILE being first world (in other words, they are the biggest target markets for tech). Whereas the "happiest" and pretty rich countries like Denmark, Finland and super-technological Norway get everything later, because of a several-million population.
Translations take time. If countries not on the roll-out list changed their languages to English, I think they would stand a pretty good chance of making the list.