Why do we even use Tape and XDCAM Discs anymore?

[nateo200]

Why do we even use Tape and XDCAM Discs anymore? I don't get this AT ALL!!! I get old happens never die and that we have the stuff laying around but I sill don't get why we don't hook our cameras, computers with NLE software right into high speed flash media!!!! I can write at 95MB/s onto Sandisks high end flash drives as much as I want and it don't spin or get jammed from the weather!!! I don't understand why a Sont XDCAM HD throws data onto Professional Disc which while reusable seams dumb....

I get the cost factor but that only seams present when you need to distribute the format....

When AVCHD cameras first came out or maybe they weren't AVCHD, anyways I saw these camcorders that recorded video to full size DVD's and then smaller DVDs and I wondered why they could just record onto a hard drive or flash drive? Why waste disc formats on something your presumably going to need to edit...RED seams to have this idea down since there cameras have been based on a file based work flow since the start but why are people settling for non-file based work flows? I pop a SD card into my camera and record a full HD image at 100mbps then pop it into my computer and its there...can someone explain why Sony, Panasonic and some others are stuck on what looks like advanced Betacam workflow!?