After a few years the orbit will degrade enough that it'll start to fall back to earth. At that point, the satellite will either burn up completely on re-entry, or partially and the rest will fall to earth.
Either way, each of these satellites will be completely gone from orbit after a few years.
If you're mixing things up in the kitchen, typically you try to be somewhat precise with ratios.
The difference in this case being that because the actual ratio of the blend is unknown, you don't actually know how it would crystallize. Technically they could even change up the ratio week to week based on the price of high-fructose corn syrup so you wouldn't even get consistency from it.
Well, yes and no.
Quantum computers will likely never beat classical computing on classical algorithms, for exactly the reasons you stated, classical just has too much of a head start.
But there are certain problems with quantum algorithms that are exponentially faster than the classical algorithms. Quantum computers will be better on those problems very quickly, but we are still working on building reliable QCs. Also, we currently don't know very many quantum algorithms with that degree of speedup, so as others have said there isn't many use cases for QCs yet.