Comment by icedchai

Yes, but that rarely happens with IPv6. ISP / LIRs get huge allocations.

The real problem is BGP isn't available from most home or "small business" internet connections. You can't multihome even if you want to. You need a DIA / enterprise plan, or you need to use tunneling (which is what I do, from several BGP capable VPSes, in a configuration that is too complex for the typical SMB.)