For now, I agree. It is more than investment, than a currency. But we can change that as well. If those guys above us will make some laws to regulate and handle blockchain normelly, we will have the Bitcoin currency.
I hope what you are saying comes true. But even if it has failed as a currency or used primarily for other purposes, it is not the defeat of crypto. Many projects have evolved in same way. Like YouTube started as a dating website and later became a video sharing platform.