There are more than one way for starting a brand new web-hosting venture. However, most of them include expensive start up fees such as leasing dedicated servers, leasing your own managed routers/switches, adding KVM points and as such. There does exist an easier alternative way to that. And that is reseller hosting.
To start with reseller hosting, one does not require any eupfrontf credits at all. In a reseller hosting environment, the option to upgrade as you go on exists and is easily available. The user only pays for however much they use and this can help reduce costs. For instance, an user may or may not be using all that hefs paying for. In that case, the extra bits of resources are nothing but an waste.
In reseller hosting, you can slice up your own portion into small bits and use it all on different customers, essentially allowing you to shift to a better alternative.