I greatly respect Fastly and their technology, but they (and Varnish) are biased against small companies and make it impossible for me to sign up customers who would benefit from their services and one day might grow into big spending customers.
AWS has shown that the days of "min $5000/year" (as both these services have quoted me for individual products) can be over and you can be profitable. Companies who don't catch up with that are cutting off their future.