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That means they're no longer profitable. And in long term, they won't be: there will be way more demand going on.
However, how is it possible that some bots have more voting power than bids yet they end up with neg profits? Thanks.

Because the bot tracker site factors in curation % (25%). So profitability is based on 75% of the vote. I still see lots of windows still profitable on the site.

It's not 90% of the windows anymore though as it used to be.