Hm… a lot of different viewpoints - all valid.
My twopenneth (or two cents)….
The industry is moving towards computer centric music in all environments. It’s so easy now to buy, or even get for free, vsts that will “do the job”. I’m moving to a laptop and vsts because it’s safer to use a “dumb” keyboard to drive them. In the event of theft I can easily register my plugins to a new pc, I can easily find another keyboard to drive them. If I lose my Kronos it’s expensive to replace. Plus it may just fail anyway.
Don’t get me wrong - I love my K and I’m keeping it until one of us dies. But I will sample the hell out of it in the meantime - even though that defeats the point of having all the engines I can keep my sounds.
Korg have more recently gone towards the Raspberry Pi - I’m not surprised, it seems to be bullet proof, readily available, and it’s quite powerful - and cheap. I wonder whether there is a market for a keyboard that you can plug multiple Pi’s into - each hosting a vst, sequencer, karma, mixer etc - each one from your manufacturer of choice. (if somebody takes this idea on remember where the suggestion came from

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The current market seems to be orientated towards some kind of master controller and pc hosted instruments. I think that Korg will go in this direction - a “Kronos” controller and software behind it. It doesn’t make sense anymore to have proprietary hardware, and that’s not where the money is.
Now let’s think of a reason why it CAN be done...