reply to BF69
Re: SoftBank offers unlimited service in .jp Especially when you have to fight your own MVNOs for customers and companies like PagePlus you won't beat out. Unlimited talk and tex for $30 per month. NOT going to beat that. You want data its $45. And it uses the VZW network.
Sprint has to also compete with TracFone's tons of companies that use their network and everyone elses. And then you have the Kroger Family of Company that has their own MVNO on Sprint who actually will give you free minutes and data for shopping at their stores.
You are assuming SoftBank will renew those reseller agreements or raise wholesale rates.