totally agree. consumer quantum computers are many decades off.
Many decades? Sorry I disagree. It’s not the 1940s anymore, we have already recognized the concept of the personal computer as being valid, which was a big hurdle at the time. There were technology moguls that claimed, up until the 80s, that the PC would never take off. If there is a commercial application for this type of computer then there is a consumer market for this kind of computer. Where there is a market, there is (or will be) a producer will to service that market.