BadPoet - very very sorry you have had bad news.
The problem with using Greenwich Theatre as a model is that many many of the commercialy viable productions rely on talent that has been developed and 'road tested' in the subsidised sector. The arts overall make money for this country. They make actual cash, and also prevent expenditure in many social contexts. The subsidised sector is where the arts community do their R&D, product development, and training. Good for the Greenwich theatre - a successful local theatre, but it is succesfull partly because it relies on reliable arts product. It's programme is enjoyable but is neither risky nor innovative.
War Horse is a W End success and raking in VAT and income through the tourist trade, hospitality industries etc - but a show like that would never have developed from scratch in the comercial sector. The artists who worked on it developed thier talent in small subsidised thates where the 'right to fail' enabled the experimentation that creates gasp-worthy theatre.