Blu-Ray Disc Media Larger than 50GB Incompatible with Existing Players – BDA
APH Networks — ... are no cost-effective blue lasers that can read or record multi-layer Blu-ray discs. In fact, incompatibilities between various high-capacity cassettes or discs with appropriate players are nothing new to the market. For example, some DVD players do not support DVD±R DL media, whereas some VHS players did not support long-play 240 minutes video cassettes. As a result, content makers had to stick to default standards that were supported by all installed players. View: Article @ Source Site ...

Current Blu-ray players only support discs up to 50GB
DV Hardware — The Blu-ray Disc Association (BDA) confirmed that existing Blu-ray players will not be compatible with 100GB or 200GB BD media: Even though Blu-ray disc technology allows creating multi-layer high-capacity media that can store hundreds of gigabytes of data, the Blu-ray disc Association (BDA) claims officially that existing Blu-ray disc players will not be compatible with 100GB or 200GB BD media. ...