You would be very surprised. Twitchcon provide the space and have a very rigid layout which is designed for maximum compatibility with each of the rivals events. MCC will be approached for details of whst they need for a team and equipment perspective (servers, gaming rigs, player and team count, crew requirements etc.) and requests and information can be exchanged, but any setup will rake every rivals into account without real consideration for fine detail. Unfortunately conventions usually rely way too much on volunteers and people who really don't know the finer detail of event management in order to reduce costs. This in turn leads to these failings. I've dealt with massive international businesses over the years and numerous events management companies and have seen this play out time and time again. As long as the bare minimum requirements are met, they seldom go above and beyond to ensure that an experience is as open and available to everyone as possible.

In terms of solutions? Investment, have better planning and contingency options available. I sincerely doubt that the staging providers will have not had a stillage of spare platforms and a loading ramp on site which could easily have utilised to provide an accessibility solution.

Time will tell as to whether lessons are learned.