Serious Question

I went to Modern Times' Lomaland Fermentorium last night to try its fresh hop hazy Arcosanti IPA.  It was a more than a solid IPA, and it had a soothing, late bitterness not found in most hazy IPAs.  The fresh hops added a fruit juice flavor boost and the ripe fragrance was excellent.  My question is not about beer, but Modern Times' crowler policy.  I counted twenty-nine beers on tap at Modern Times last night, but only three were available for crowler fills.  Why does Modern Times offer crowlers at all? 

I guess Modern Times does not want to fill crowlers of beer it sells in cans or bottles, although I did not compare the cans and bottles for sale to the tap list.  I half see this policy, but I don't agree with it.  If someone wants a crowler rather than a four-pack, sell the crowler.  I am more sympathetic to the idea that Modern Times wants to keep its limited release beers and collaboration beers for in house customers.  But still, speculation aside, having only three of twenty-nine beers eligible for crowler fills is lame.  It is time for Modern Times to can its crowler machine.