Hopefully he can still afford his
second phone. If Ooma refused to change their policy, but they proposed a counter-offer instead, then it sounds like they would (and did) at least listen. There are other call-blocking alternatives for anyone who doesn't want to pay for Premier service, such as handsets or third party devices that offer their own blacklisting or whitelisting functionality.
Traditional landline providers frequently rely on government programs to offer discounts to low-income subscribers, and they may be at least partly reimbursed for that. The details vary between states and providers, but generally they offer a discount on one of their
lowest-tier plans to approved participants. And that may still cost more (and offer less) than what Ooma charges for Basic (or even Premier) service.
Let's hope that Ooma exercises their own due diligence before offering low-income subscribers incentives to cancel their Premier subscriptions. If there are a lot more of them than expected, then Ooma might have to cut back on other services (like customer support?), or raise their prices for everyone else.