And another but: Quantum computers are still a long way from being ready for mainstream use. The machines are notoriously prone to errors, because even the slightest change in temperature or tiny vibration can destroy the delicate state of qubits. Researchers are working on machines that will be easier to build, manage, and scale, and some computers are now available via the computing cloud. But it could still be many years before quantum computers that can tackle a wide range of problems are widely available.
In the mid '70's my brother bought a computer for Monsanto that required a heavy duty AC in it's dedicated room and had about as much capability as a Tandy (Radio Shack) laptop that he bought for his daughter in the early 90's. We will all have quantum watches by 2030!