1 to 2 years is for recordable DVD media, not "pressed" DVD, which are much longer keeping data.

I didn't think of that!  I know that there are ink CD/DVDs and metallic ones, and the re-writable ones that rarely ever work.  It didn't occur to me that "pressed" ones would have a much longer life.

I wonder if those future 1 TB Blurays will be pressed or recordable?

I also don't like DVDs because they get scratched seemingly just by BREATHING on them.  Too fragile. 
I once had a magneto optical drive which had a sealed tray that contained a re-writable 1 GIG disc inside.  It was far too slow and cost about $1000!  That was probably the stupidest thing I ever bought!