should be more like this:
I sell 100 gold bars to build a gold mining operation.
My mining operation uncovers 80 gold bars.
Did I make my ROI?
No I did not.
The price of gold bars increasing or decreasing does not change that. *edit* Nor does it matter what price I bought those original gold bars for. You were right the first time SolarSilver
Even Yifu from Avalon measured ROI in BTC, not the dollar/euro value, etc. It will be a long discussion on how you define win or lose. I was aiming to the word "losing" in the topic.