There are 1000s of Chinese assemblers of E bikes - some large, most small.
They have jumped on the bandwagon over the past 5 years with the rapid increase of sales especially in Europe (and notably Holland) because that is what China has done for years.
As already stated on here, the economies of scale that can now be achieved by the motorbike manufacturers simply cannot be achieved by the E bike assemblers - not yet.
It is like the early days of the IBM clone (PC) back in the late 80s. A PC cost a fortune and you could get one built by any one of 100s of different companies - now its either a Dell or a Dell and costs peanuts.
Give E bikes another 15 years and they will be mainstream, made by 4 or 5 of the big guys and probably sold in Tescos for a quarter of what they cost today.
They'll all look the same, though and if they go wrong you'll be dealing with the call centre...but that's the price of turning niche into commodity and getting your pricing down.
This doesn't mean that there isn't an element of ripping off in some cases when there's a 'what the market is prepared to pay' attitude.
And as long as people 'are prepared to pay' (because essentially they think that the more they pay, the better the product so social status goes up, you only have to witness the cost of branded trainers for example), prices will remain high.
With more and more sales of E bikes I think we'll see less of this blinkered attitude- better for everyone all round.
Hatti