Too bad TCPi didn't have the Foresight to find a venue with enough capacity, unless this year's venue is the only one they could find in the host city.

I believe the real reason behind this decision is one or both of the following:
*Security concerns after the foiled mass-shooting plot during last year's event
*Event organizers didn't know ahead of time of venue capacity limits imposed by a government agency, such as a building inspection department or fire marshal.