I highly doubt if they counted you as an enterprise customer. Enterprise customers have significantly large multi-year contracts. I have worked in sales org before and we reported only contracts which fetched ~ 100k/year as enterprise customer. 10k to 100k were reported as SMB customers. These numbers may be different for Fastly but I doubt $100/month customers are called Enterprise customers.

Good luck getting 100k/year contracts in CDN and at a second grade provider.

The market has been commoditized by CloudFlare. CloudFlare is charging $200/month for the business plan, or $2000/month for the enterprise plan with everything.

There can be banks or government paying 10 times more for custom plans (extensive support and long cycle cycles). These would never adopt Fastly.

Akamai can get away with charging millions of dollars to some historic customers who really don't need the service. If they ever migrate away, that's explicitly to take a zero off the bill.

It appears to be a misreading.

> We had 1,582 customers and 227 enterprise customers as of December 31, 2018. This is an increase of 143, or 10%, in customers and 57, or 33%, in enterprise customers from December 31, 2017.

Page 72.

The same figure appears again in the table on page 76.