the way I see it PG is a labor of love. Bit odd if Barnes & Noble or whoever piggyback off it. But in the end - the more people read the books, the better.

It is a public good, and it would be appropos if corporations would support it directly rather than work at cross-purposes to it.

If Amazon is going to sell public domain texts, then it would make sense to source them from PG, and fund some money from those sales to the non-profit, similarly, they could then funnel reports of typos to PG for review and correction (it was a bit of a struggle the last time I tried to get a text corrected, and the project founder/director actually stepped in on my behalf).

that would be great! Sadly I'm not very confident that that will actually happen ...

Needs new legislation where the commons/public domain have public benefit corporations appointed as the manager of said resource.