Ah, a favourite topic of mine - don't grow old chasing rainbows
The problem here is that for the most part analysts and consultants build these maturity models on constantly shifting sands; they are forever updating their own predictions and market definitions to the point that by the time you spend the required amount of money and expend the necessary blood, sweat and tears to get the medal of honour the enterprise world has moved on and so has the maturity model. The trouble is that they're aspirational and I've yet to meet any client who has gotten more than half way.
Don’t you feel a little like Sisyphus ?
Every organization is different, every business cannot possibly fit their ambitions and capabilities to match the curve and it’s definitely no bad thing to know that you can’t. Maturity models like this only exist to fuel spending, not your growth in real terms.
Don’t continually push that boulder up the maturity curve to watch it roll down the hill again a year later.