Velocity is usually measured in inches per minute (ipm). Average speed depends on a lot of things, generally related to cost.
You're 80-100fpm (960-1200ipm) is what I cut on the $100,000 router we have at work. The 15HP spindle is probably $15,000.
Trying to cut 3/4" deep at those speeds will just stall a low power spindle and snap the bit.
A lot of the machines you see here use either 2HP handheld routers or the more powerful (and more expensive) 2.2Kw chinese spindles. Most cutting is probably done in the 100-500ipm range with these machines.
Tooling, material, machine rigidity, and power all factor into cutting speeds. Look at a chip load chart from a tooling manufacturer to find ideal speeds for specific tools and materials. Whether or not your machine is capable of achieving those chip loads is another story.