What is most important that make bitcoin price to increase is the usage. Some people see it as an investment, while some people see it as a hedge against inflation, while some people see it as a means of transferring money fast. This usages make people, companies and governments to adopt it. If bitcoin has not use, it would have not been adopted and its price will not increase.
Fundamentally, it is good in technology: decentralized, secure and provide people good control of their coins, privacy and anonymity somewhat. Therefore people are more accepted Bitcoin over time, and when more people use bitcoin, it increases demand on Bitcoin then price will be beneficially moved upwards considerably.
Usage will generally cause an increase in the Price of bitcoin while an increase in the price of bitcoin is dependent on Adoption which is the same thing as what you have termed to be usage of bitcoin
If nobody use it, it is hard for gaining value and price and price can be somehow high in short term but in long term price will return to zero for reflecting its true value - no value.
Bitcoin, fortunately, has many use cases and utilities so that many people see these potential usages with Bitcoin and they accept Bitcoin, actually use it in their life. That's helpful for Bitcoin to get value and price in short term and in long term in very sustainable growth over time. It's very different than altcoins, scam projects that can successfully make hypes and get very high trading volume, prices for their coins in short term while in long term, we have witnessed many dead altcoins.