The problem with blu-ray: it doesn’t meet the new technology requirements to become mainstream. It has to be [I]better[/I], [B]cheaper[/B], and [B]smaller[/B].
It would seem to me that flash memory chips would be ideal assuming you could get blu-ray quality. Hopefully, it would avoid the replication monopoly and copy protection surcharge ($3000 per disc right now for Beta-Ray.) Flashing these could be done by the distributor instead of having to send to a replicator… everyone would use the same blank chips, so they could be made cheaper since there would be no need for specific glass mastering that is expensive with beta-ray.