Do you think that an average person will have access to quantum computer? They'll have access to it when everything will be quantum resistant. Good luck building a quantum computer yourself and good luck stealing or selling US, Russia and Chinese intel.
I believe we are on the same set of mind. If the internet will be ready by the time quantum computing reaches hands of average people then I highly, HIGHLY doubt Bitcoin will not be secured against it. If it is not secured within the right time, clearly Bitcoin will either die or at least a ton of us will lose faith and get out.
Considering it is being worked on however, I do not see why it should be a scare. If quantum computing will be announced to be ready for consumer end in less than 6 months, I also highly doubt there will be no group of people who will work hard on making Bitcoin secure against it in two to three months, way before any thing bad can happen to it.
That's impossible for Bitcoin to not be ready. Just look at Bitcoin's market cap, it's becoming the next gold but digital, i.e. in other words, it's a digital gold. There is so much money invested in Bitcoin that it's the interest of major exchanges, casinos and other Bitcoin related businesses to make Bitcoin quantum resistant when the time comes, that's why I'm sure that it will be ready for that time. There is no way that companies like Binance, Coinbase, Bitmain and others will lose billions of dollars and do nothing. Also its in developers' interest to keep Bitcoin healthy and resistant against threats.
Actually there are many companies with quantum-computers offering free use. You can use IBM, Google, and after approval even D-wave (has about 2000 qubits, they claim).
As far as I know, there is a difference. Quantum computer can be good at something but bad at other things. It's not like an universal tool.