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That is a marketing video from an online retailer. No complete in their coverage nor free from bias. They have a broad line, but these appear to be some of the only active speakers that they carry.

At around $20K all in the JBL M2 is less money than the Steinways, the Meridian, and even the Bryston, but are those other speakers better (especially $80K+ better)? Diminishing returns are a real thing to consider. Once I got the JBL 230's that use trickle down tech from the M2's hooked up to the right electronics I lost all desire to change. Are their better speakers? Of course, but I just didn't feel the need to change anything as I love what they do. The M2's have influenced every speaker coming out of Harman (all brands) since they became available:

Here we have a "blind" comparison between an M2 system and the Revel Salon2. Guess which one wins, handily:

The conclusion:  http://www.avsforum.com/forum/89-speakers/2907816-speaker-shootout-two-most-accurate-well-reviewed-speakers-ever-made-12.html#post54628832

The whole thing: https://www.avsforum.com/threads/speaker-shootout-two-of-the-most-accurate-and-well-reviewed-speakers-ever-made.2907816/#post54546472

PS- You could also pair the M2 with Mark Levinson amps instead of the crowns to take them up a notch:

The pro version of the M2 is packaged with Crown amps rated at 600 watts per channel plus a separate crossover. The whole package for two speakers costs $20,000.

The $46,000 consumer package shown at the CEDIA Expo combines a pair of M2s with four Mark Levinson No 531H 300-watt monoblock amps and an SDEC 3000 digital EQ/crossover. The SDEC 3000 also allows an installer to do room correction on the speakers.

FWIW, even the JBL 230’s are like a mirror, what you put in is what they reflect. The slightest change upstream is reflected downstream, probably worth the amp upgrade' See if you can audition the M2’s with the ML amps. If not you will still be pleased with the crowns.