The whole point of growth hacking is to get enormous growth on a shoe-string budget. Growth hacking mainly revolves around developing and running tests, campaigns to find out which channels, segment, ads work the best and to focus on them to achieve rapid growth.
As growth hacking focuses on developing low cost strategies, any business can use it. It is not limited to SAAS companies and tech-savvy marketers. Even a small eCommerce business can use it to fuel its growth.