Microsoft is a perfect match with windows phone - well yes in the same way that Apple is a perfect match with IOS but that doesn't really add much
Pulling out of manufacturing phones was a mistake - but thats the decision they made so we have to live with it
Windows phone needs OEM - yes, but it has none and no-one is lining up to start because MS have cancelled Mobile
*IF* they took the monumental decision to reverse the discussions of the past few years and *IF* they put another shed load of money behind it then they *might* get some realistic share of the market and that *might* get others to risk their own money but they aren't competitive in Mobile because they are no longer in Mobile.
The platform has no future *unless* Microsoft choose to give it a future
a development that takes 5 years to mature is not spectacular, with money and time you can make any software work but the market didn't wait and now its looking fairly dated, there are some nice touches and I still like it but can we see one single aspect of it that isn't available and/or better developed elsewhere?
Turning Lumia into a bold success would be more than a success story it would be like resurrecting the dodo, that's not because I don't want them to try it's just where we are.
Your enthusiasm is great but you have to face reality - If the Lumia brand continues at all it will be ONLY a brand name - in the same way BMW Mini shares only a name with the original Leyland Mini. Imagine that MS decide today that it was all a big mistake, a new phone in the Lumia line has to be designed and manufactured which will take at least a year and by that time there will have been new Pixel, Samsung and iPhone - what will MS do to make their new phone appeal to the people who have just invested in those new phones and if they can think of it now what didn't they think of it before?