Heads in the sand?

I’m writing a bit about the institutional church for my dissertation.

Everything I’ve read says that the institutional church is:

a) declining and

b) increasingly irrelevant

So, I have two questions.

Am I just reading one side of the argument, and if so can you point me in the other direction?

If I’m not, and they are right, how come we seem to be pretty much persisting with a model which doesn’t work?

I know that it can be argued that ’emerging church’ and ‘fresh expressions’ are having a go at something new but at a structural level the churches in the UK aren’t even considering wholesale reform.

Why not?