Because spending $500 dollars a month versus having the control to close a tab you don't really need to track is inane. Would you pay that recurring fee out of your own pocket to improve your own productivity? That doesn't seem like a reasonable proposition to me.
For at least a decade of my life, I was a 200+ tab person. Paying any amount of money to make my computer slightly more responsive versus the time I lost just clicking through (literally) hundreds of tabs to find something versus logging it--let alone simply searching for the same thing again and hitting the links that float to the top because I've visited them--doesn't make any sense to me.
As I see it, the "problem" here is not that you need to have 200+ tabs open at any given time. The problem is precisely that you have 200+ tabs open at any given time.
If you have the ability to keep track of 200+ tabs, exactly where they're located on your screen, and can switch back and forth between those and your actual work within a matter of seconds then kudos to you. You're actually a genius, and your employer should definitely consider purchasing this ongoing subscription for you.
[edit]: Just looked at your history and realized I'm probably replying to an astroturf account, so joke's on me, I guess.