The reasoning in your first paragraph never really seems very sensible or realistic. So people with very limited financial resources to begin with will be able

The reasoning in your first paragraph never really seems very sensible or realistic. So people with very limited financial resources to begin with will be able to buy ultra-low-end phones that offer poor performance and a poor user experience. Then they'll only be able to choose among a very small selection of apps, none of which end up being particularly useful. And although they have basically no money to spend at this point, somehow their mere presence online will somehow induce companies, who need to make or take money from these users somehow, to create more apps? It just doesn't follow. It makes even less sense when you consider that it's possible to get used Android phones in these target markets for the same amount of money, if not less. And these Android phones often end up being more capable than a new, low-end phone running Firefox OS. Plus they offer all of the numerous benefits (like better performance and far more apps) that even old versions of Android offer over Firefox OS.