That depends on the purpose:
For PC's: Not necessary. Who needs 50GB+ disc media when Flash/SD/drives cards are rapidly surpassing/already passed BluRay in all aspects: storage, price and read spead.
For films: That really depends. The latest marketshare figures aren't very hopefull for BluRay. In Holland it was 2.75% revenue and 1.1% units sales of films over 2008. With the economic crisis I think it's over with BluRay.
For gaming: Very big chance imo. Next generation games will easily surpass the capacity of DVD. PS3 proves that it's a good game media. If the reading speeds increase it's basically ideal, since it's proven technology that's fit for purpose.







