What is the future of SaaS (Software as a Service)? Do you think it will succeed? If yes, why?

What is the future of SaaS (Software as a Service)? Do you think it will succeed? If yes, why?

Future SaaS of DW / BI and also other software development & environment are extremely promising:
Yes. It will Succeed.
Because
1. Infrastructure costs are reduced instead of one time huge investment
2. Reduced in Software cost by usage instead of buying
3. Implementation cost on IT Consultants reduced
4. Latest - Security reliability
5. Current Internet Speed & their Cost
6. Reduced - Operations cost on System Administration
7. Cost Spent Efficiently for the Usage.
8. There would not be any new upgrades , new technology transfers , because currently N number of Softwares are coming into Market & their Support
9. Any time pick different Service Provider & advancement with new trends & Technologies.

-- There are lot to go on.