I heard that most big and established betting sites/companies started without licenses. They were able to grow and become licensed and now controls the industry. I know one or two by name.

However, license has become almost a must these days if you're ever gonna be taken seriously in your sportsbook business.

Most software providers won't even think of releasing their software to you without a license.

Payment processors are simply a no-go area without a license.

 Is it still possible to start and run a Gambling site without a License?

Now, talking in users perspectives-

  Can a Sportsbook still be considered legitimate and okay without a license?

  Do you know any operating (with consistent payout and good customer cares) without a license?

  Can you bet with a betting site that has no license, maybe because they're starting new and currently has no money for licensing fee?

Thanks in advance for your opinions