People don't appear to be divesting from the bankroll.

The lack of divestments could also be because we're not at a profit all time high, and commission isn't charged until then. Current investor profit is 6150
BTC and ATH is 6167.8
BTC, so there won't be any commission charged until players lose another 18
BTC. Would be an additional 0.5% profit based off of current bankroll size.
I have noticed that both number have increased since your post and no one seems to have started divesting yet. Do you remember what the numbers were at the beginning of March? (latest change to commissions?)
According to
DiceSites, the total profit was 6146
BTC on March 2nd, which is roughly where the ATH should have been as well.
Also, interestingly enough, it seems someone (or many people) thought it was a good idea to invest a total 154
BTC last week:

Feels like the commission will never get back to something more normal especially with how Bitcoin's price has been changing recently
