Yes, I too was seeing this coming, especially after the recent reduction of the Nokia 6.1 price by Rs 1500. When I bought the Nokia 6.1, I did not find any other suitable Android One phone and chose Nokia 6.1 though the price was higher than what I would have liked. Nokia now has an whole array of Android One phones, hence its entire Android One product line would start seeing a reduction of prices because of competition. So the new users would start enjoying reduced prices and the old users would have paid higher prices.
What is the purpose of fair upgrade option? I do not want to spend any more money to buy any upgraded Nokia phone. I will live with the Nokia 6.1 for 2 years or more as long as I continue to get software upgrades. I will start exploring for a new phone only when I have exhausted the life of this phone.
Tweeted this almost 5 months ago to @nokiamobile when they released this for China as many tech geeks told it would also be available for rest world. But they replied its for china only. All are cheap business policies. Just bring new sets with new features & forget the past ones. This phone rat race is never ending unless we can upgrade hardwares like desktop. Its going sicker by day to invest on high end phones.