I think the most immediately relevant way to help is to be proactive in terms of keeping customers and partners informed of the parameters of your products / services that will be affected by cinemas being closed - GDC have done this in the way of technical bulletins to partners and it looks like many / most other hardware vendors have done the same.
Trade bodies like CTC are also a great resource where cinemas can look up information from suppliers and get impartial advice on how to manage technology during this Pandemic.
Most importantly, what we can all do to help exhibitors is 'being here', as in, keeping our lights on and being here for cinemas and their integration partners through this period - answering questions directly on how to manage technology and how to best prepare for when the cinemas re-open - which they will - and be able to operate technology and wow their customers!