Definitely understand the appeal for first time founders, and founders who are early in their careers so don't have contacts in the industry they are building products for, but having gone through an accelerator myself, I can't really imagine going through an accelerator a second time. Maybe for second time it still makes it easier to get introductions for b2b customers? But the accelerator I went through also taught a ton of strategies/tools for getting early customers without depending on just other companies in the network using each others products.