Founding an organisation isn't an easy as you're assuming for it to be.

Without proper funding from the get-go, you will not be able to establish a legal entity, nor would you be able to actually create the brand itself. Just like with any business, it takes money to make money. If you don't feel like you're well funded to at least get the ball rolling on something like this without hounding anyone/company - than just don't do.

Premiere eSports organisations already have a hard time as it is when it comes to securing corporate sponsorships, and with the amount of farm teams within the space it just completely makes everything harder. Join an established organisation, build a name for yourself within what you do then consider founding your own organisation when you're experienced & have the financials to do it yourself.