Not to be flip, but who cares about Bestseller List anymore (except the companies with dinosaur business models)?
The Top 40/Top 10 Song List still exists, but who cares (except maybe to corporate DJ's)?
I would argue that lists like the NYT are merely a barometer of what books have received the biggest marketing budget. And that is not interesting except to booksellers trying to pick what books to stock. That's not really an issue with ebook sales.