It failed because it was slow and provided no obvious benefit to the average user, other than wasting disk space. There is a fair amount of tricks and optimizat

It failed because it was slow and provided no obvious benefit to the average user, other than wasting disk space. There is a fair amount of tricks and optimizations in NTFS to balance speed of access and shadow copy mechanisms, in a pre-SSD era, where the average random throughput of a consumer-grade SATA disk was single digit MB/s