Is a demoniitized resource-based economy possible 'right away'.
Yes, to a very large degree, for small voluntary communities, who can eventually be interconnected. For the whole society though, we need a transition, I believe:
The transitional system that I see is:
1) where demonitized resources are exchanged through stigmergy , mutual signalling in open ecosystems, as open source and peer production already does
2) a layer of regenerative market mechanisms, linked to regenerative outcomes (solarcoin, fishcoin, etc..)
3) a planetary commons of knowledge about matter-energy 'thresholds and allocations', implemented through agreements (and in emergencies, probably and unfortuntely, coercively ?)
As I said in another tweet today, 'mutualization', aka the commons, is the bridge between scarcity and abundance.