You must not get around much in the black powder community. There are more than a few that think with their 1-2lbs per year consumption is something that a large corporation would take notice of if they "band" together and sign petitions, etc. There are those who think the NMLRA is a big user, but.... there is one many don't know about.
One group that the powder companies DO look at is the North South Skirmish Association. The upper management of Estes, Schuetzen and Wano have paid a visit to our home range in the last couple months to see for themselves. Based on a simple internal estimate, black powder usage of the N-SSA at our Nationals totals easily over 2.5TONS each year, and that doesn't include artillery use at each Nationals or at regionals with an artillery component, so add that in with all the regionals we hold during the rest of the year and the figure just gets way bigger. Based on what I've been told by the artillery guys and couple that with a normal regional course of fire, and our use rate per year is easily over 5TONS. I personally go through over 30lbs per year and sometimes closer to 50 and I'm not unusual in the N-SSA.