Multi-FX is hardly a $2000 feature especially given the sounds working guitarists actually need and use. If they could do it 20yrs ago they can definitely do it now.. Using the whole DSP on one out-there sound isn't very useful to most musicians.
Besides the main thing undercutting the $2000+ racks is the old units themselves, which the H9 could easily replace.
The really high end market will always be there.
It's only a matter of time until Strymon (in particular) or TC do it.