I feel that ALL studios should support both HD formats and let the marketplace decide which is the preferred player. If the movie is encoded with VC1 it can be released on both formats without the need to re-encode for a seperate release. You can twice the market for one process. There is money sitting on the table from HD-DVD buyers!
Own the Toshiba HD-A1 and several titles. Buy DVDs regularly and now restraining myself waiting for HD titles (so until they appear, the industry is losing money.)