I think, he was mostly joking, but it might actually be the case. Sounds like they want to keep the Pocket company intact as it is, just as a wholly-owned subsidiary of the Mozilla Corporation and with everything open-sourced. So, Pocket as a company should continue to try to make a revenue and if they do, that revenue goes upwards into the Mozilla Corporation (and from there upwards into the Mozilla Foundation, if the non-profit nature allows it).
There's also Callahad commenting in this thread, who, as far as I'm aware, is a Mozilla employee. And well, he sort of confirmed that this is a move to diversify Mozilla's income streams:
>bearcobra 12 hours ago [-]
>Does this mark a strategy shift away from search revenue as the primary funding source? A quick crunchbase search for other aquicisions by Mozilla yeilded nothing, so I'm curious if there are other examples of them buying up for-profits.
>>callahad 12 hours ago [-]
>>Mozilla is actively working to diversify its sources of funding; the greatest step in that was when we switched from a global default of Google search to smaller, regional deals with Yahoo, Google, Yandex, and Baidu toward the end of 2014.