Naaa... I think Quantum Computing its like Rocket Industry... you either PAY (invest heavily on it with completely overwhelming justifications) for it's development and get the market that will be created in 10-20 years... or you will just be like all users that bought after the first time bitcoin went above 1k$... and then they ALL sold when it was 300$...
The problems Quantum Computing solve are not as easy to understand as probably many will "think". We are talking about a computing technology that is NEVER "certain". It's all about approximations... and statistical results... or answers... or guesses. Nothing like... how much is 1+1... where a normal computer would be able to answer you with 100% certainty (if no electronic/electrical errors occur in the motherboard/CPU) that its 2.
A Quantum Computer? They would probably give you a "couple" of answers. Not just one, to start with. And then it will be something like... it will be 99% 2, 0.(5)% 0 and 0.020303% something else...
Its Quantum states... so, everything can be approximated by several states at any given time. Yes... time! You have time as part of your results... all the time! But on Quantum computing even more.
If you get to know and scientifically explain me more how this can overtake crypto... let me know. I don't think it will be harmful for crypto, and eventually by the time someone finds a way, crypto has already protected themselves against the solution that cracks it.
=)