Founder takes all

"Founder takes all" means that the person who started a company (called the "founder") gets all of the rewards for the company's success. This is because the founder put in a lot of work and took a lot of risks to start the company, so they deserve to get the most benefits if the company does well.

So if a company makes a lot of money, the founder gets to keep most of it instead of sharing it with other people who worked for the company. But if the company doesn't do well, the founder also takes on all of the losses and risks losing everything they put into the company.

It's similar to how if you build a sandcastle at the beach, you get to keep it all to yourself because you built it. But if a wave comes and destroys it, you also have to clean up all the sand and start all over again.