It goes beyond just the web bandwidth.

For every album that gets MQA'd they will no longer need to keep the other legacy versions (i.e. standard FLAC or MP3 etc). The files are backwards compatible.

Imagine the impact longer term with vendors and streaming providers just storing one version.

Hard to see how they will make both 'normal' and 'MQA' services work. If only the people with MQA decoders buy into the MQA service then it makes the backwards compatibility redundant.

Non MQA-enabled folks will need any easy path into upgrading and access to MQA files as part of the normal service (a single service) will be enough temptation for many. That will help the adoption rates.

Rgds,
Nick