IMO people loose much more than they make at freebitcoin.
How do you lose money exactly? I thought you were given a free roll and the ads on the site pay for the winnings.
they might accept deposits too, I'm not sure. Or you can count the free roll like an already won money.
And for economists, oportunity cost is also a cost, so you pretty much lose money no matter what you do
You can lose time for sure, but time =/= money tbh. If you weren't gonna do anything productive anyways, arguably you lost nothing.