Enter in SD WAN. Talari and other companies have developed technologies and algorithms that allow the bonding together of multiple lower costs links from different carriers into a single, higher aggregate bandwidth pipe, that has higher availability and throughput than a traditional more expensive MPLS network.
In addition, because we have spread the bandwidth over different medium (cable, fiber, G4, etc), and different companies, the failure of any one link does not bring the network down and is therefore more resilient. So, the adage: A three stranded cord… applies.