Much of the conversation on cord-cutting is focused on consumers trying to save money.
Here are some drawbacks for high-end consumers:
1) Delay — Live content can be delayed by 30+ seconds
2) Choppy video — Digital cable is 60 frames per second vs. 30 for most streaming services.
3) No surround sound — Dolby Digital is not supported with most streaming services.
These are probably reasons why high-income consumers are adding streaming to their pay-TV service (see comScore study above).