Fascinating article on the BBC News about the longevity of businesses. I wouldn't have put it past the Finns to have a company still operating that began in 1288 - I presume the web site was a later addition (although it is surprising that it was involved in copper mining and not white sock production).
These very long-lived business seem to have survived by having the knack of changing their focus at the right time - moving on as an opportunity arises. who would have thought that Nokia began in pulp and paper? If you live the supply of things that people want then you need to adapt when either people want different things or your raw materials become harder to find.
Not surprisingly I suppose Alan Hirsch would argue the opposite in The Forgotten Ways. In adapting to meet the needs of one era we become compromised and, contrary to the above business logic, lose sight of the purpose of Church. The need, therefore, is not to move on to pastures new, but rather to rediscover the raw stuff of life in Church - reverse evolution.
Can we do that whilst maintaining the structures of organised Church? I think this might be possible. It is easy to start from scratch, but Christian History gives us a story of multiple startings again from scratch, only to end up strikingly similar to what went before. I think organised Church should be able to give us the resources and accountability to rediscover our dna on this. We might discover some other assets in the organised bit of Church which stand us in good stead too.