Future Web/Internet InfraStructure -II?

Network Connections:
- POTS(Plain Old Telephone Service) -- Maybe 30 Kilobits per second
- ISDN (Uses same twisted pair) -- Around 100 Kilobits per second
- ADSL/ATM(Optical Fiber)/Cable/Satellite -- Megabits per second
All can do everything but at different quality/performance levels
Do you need high performance from user to Web or just from Web to user