Meridian were very open in communicating what MQA was before it actually reached market. We now know more about why the SEs were necessary, and the 818v3 is much anticipated for this very reason.
Unfortunately this openness has proved a double-edged sword. That MQA is such a major and complex technology, involving so many companies and classes of companies (labels, hardware companies, streaming companies, etc) means it was inevitably going to take time to bring together. Hence MQA Ltd being a whole separate company.
I know that there are lots of major players involved, and the MQA team are working hard to bring it all to market.
Personally, my life does not depend on it being released quickly, and I don't much mind if it takes a bit more time to tie up the details.
