Why don’t we use machine alloy wheels like those found on motorbikes? not the same size or weight as on a motorbike, but as a step orward from hubs/spoke/rim set up we use at the moment?

like a variation of this

good few changes mind

Just thought about it while bored at work today

I don’t think you could get them light and strong enough – motorbike alloys are lighter than spoked wheels – but by the time you scale them down to bicycle weights they would be too floppy / week