Today internet is rather different with few years ago.  Few years ago, internet is very dependent to Tier 1 ISP.  If you have many Tier 1 IP Transit, you can have better internet access, because more route can you reach with best path. 

Many IP transit now have their own CDN, but it is likely not a free service.  Traditional CDN, like Akamai, are open for ISP to partner with them.

Deleting Statement from JunOS Configuration
Here example for deleting a statement from JunOS Configuration.  I use BGP configuration for example.