I'd like to add a bit to your calc and that is if you are self-voting 10 times a day you would need to selfvote either 10 posts or a lot of comments. Now it is possible to generate 10 spamlike comments a day but I have seen a lot of those flagged. Your calcs assume a 0% flag probability.

Part of the goal of the project is to allow bloggers to blog. You only need 1 quality post to get almost the same value as 10 shitposts. The only reason we cannot beat the strategy is because of market conditions. Our expenses are sticky, our income is not.