It definitely is, but AWS has made it clear they will be rolling out multiple IPs per EC2 instance this year. The downsides of not being on EC2 these days are

It definitely is, but AWS has made it clear they will be rolling out multiple IPs per EC2 instance this year. The downsides of not being on EC2 these days are many. You wouldn't be able to offer the fleet of bonus services that Heroku can offer.