When I play this out in my mind I see this;

1) eventually SegWit gets out the door and is adopted but if it doesn't reduce verification times then what was the point?
2) even if SegWit does reduce verification times it won't ultimately be enough and a hard limit on sigops will be required
3) the block size limit is adjusted up and up but validation times ultimately dominate the mining process
4) multiple block chain-based applications besides Bitcoin are required to handle the workload in a timely fashion