What you're trying to convey. TV, computers and phones were the store of value. There is a difference between store of value and the devices. Innovation doesn't have limits, if gold and silver weren't found we could've made the same innovative devices with something else for sure. Maybe we don't get the perfect outcome as gold and silver, but there'll be a solution for it.
The rare availability makes it more valuable, with bitcoin the limited supply makes it more valueable. Being a store of value is simple, as bitcoin carries a value it is considered as store of value. Even if the credit goes to gold and silver it isn't a big thing.
Electronics buy and large all require silver and gold for their electrical conductivity properties that other metals cannot compete with when it comes to size and efficiency, if you choose lets say copper for example to replace silver, your electronic equipment would be roughly 11% larger and heavier and 7% less energy efficient. Lets try replacing mining equipment with copper instead of silver, and tell me how much more space would be required, and how much less efficient the equipment would be. The same basic principle applies across the board for all electronics, as you mentioned there won't be a perfect outcome. However, supply and demand dictate that consumers the world over require efficiency.
Case and point, people demand compact, efficient devices. It's general supply and demand. Sure bitcoin is scarce relative to other cryptocurrencies to some degree, but what happens to the value if the infrastructure becomes highly inefficient (which it is if you look at how much energy it consumes in order to compute each block today). It was a great idea, but physically speaking you cannot hold on to it. Take into account power or internet outages that are ongoing (which is the case in alot of countries suffering from economic poverty), what's it worth at that point when you cannot send or receive payments? What's the solution? Additionally, what if consumer electronic devices are too expensive for everyday people to afford, how will they transact?
Store of value can only be experienced through long term value stability. Bitcoin is unpredictable, and volatile. If and when it becomes stable (price wise), then and only then does it earn the right to be declared "store of value".