Look at the YC classes. They are very different from 2005. You can't get rich making a site like reddit today. YC is going international, with X for Y country businesses.
I was talking to a friend with a startup in Indonesia. In Asia its like 1998.
I think we are just at the end of the easy social/mobile revolution in the West and on the cusp of the next robotics/AI/IoT revolution.
And the same process that created cheap and easy tools for software, the same process that dropped the cost of starting a SaaS business 10x will happen for robotics/ai/IoT.
Its already relatively cheap and easy to prototype and fabricate things like low power bluetooth wearables.
Computers have just gotten tiny, low power, wireless and cheap enough to be disposable. These devices are about to be everywhere.
This is not the end of the tech startup gold rush. It's time to learn AI and hardware prototyping.