@painter24
MQA was not really a solution for a problem that didn't exist; to my mind, it was a thinly veiled, cynical attempt to ring fence and monopolise the streaming market. It was never about giving the end user a superior listening experience.
MQA solves two problems:
(1) High bandwidth costs. A streaming provider has to either eat the significantly increased expenditures (~6.5x for 192/24 PCM/FLAC as compared to 44/16 PCM/FLAC), or to start charging customers significantly more and thus lose market share.
In places like US, Europe, South Korea, Japan, this may appear to be an insignificant concern, because streaming subscription is relatively inexpensive in comparison to average incomes. In some other countries, things are different.
(2) Pirating. In countries such as China and India pirating of music is still a big concern. MQA mitigates this issue: without full MQA decoding a pirate will only get a diminished, lower-quality version of a master.
Also, I would not be surprised to learn that MQA uses watermarking, extending to decoded analog signal, which could enable tracing of pirated copies. That would explain stubborn refusal of MQA people to provide their encoding device for non-commercial testing.