If just everyone had bought the Noka Lumia's when they came, the range of almost perfect phones would still be actual today. But too few bought the phones, and too few made apps to them, making the range lose the competition. It didn't even helped when Microsoft got in half-heartly with their economic muscles.
I fail to see the point of buying a failed brand (Lumia) or using a failed OS ( Windows). Repeating the same mistakes seems like an entirely fruitless endeavor.
Lumia and Windows Phone 8/8.1 were a great combination but I agree were not popular enough to make Nokia profitable again. That's why the business was sold to MS. Windows 10 Mobile not so good and MS were not very good at marketing it at all, and were even worse at building on the strong Lumia brand that Nokia had created.
HMD could buy back the Lumia brand but imo they could only really use it on a Windows phone, which are really not very popular at all so it's probably not worth it.
So, Rickname, I feel your pain! I experienced the same with both Symbian and then Windows Phone. It's unlikely to happen to Android for a long time, but it will happen eventually.