We can't predict tomorrow's bitcoin price, then how it's possible to predict the bitcoin price with accuracy after years. The price to the supply depends a lot on the demand. The mining is another thing that gives the price estimate. Different countries have a difference in the cost of a single bitcoin mining. Perhaps there will be an inverse reaction on the price when the mining equipment was more effective with low electricity consumption.
Bottom line is, we can only speculate. The factors that you've indicated may be different in the future. We don't know and we don't have any means of knowing. As we've seen time and time again, bitcoin has gone against popular speculations and predictions. So there's really little use. I believe bitcoin will be relevant in the future. That's why i'm holding. I don't know if that'll come true, but it's my decision to invest in it.