Yes, capital has to be paid back. If in the early rounds of financing, the client can find a sustainable development model. You don't have to give up control to the VC. VC just allows the client to have more funds and time to support the client to find a profit model. If no client is found and fails, the VC loses money, but can contribute to Nostr's infrastructure. At least developers won't give up building Nostr for the sake of survival.

Today, jack's donations also come from jack's profits in VC and capital markets. Before the business model of joint-stock enterprises is completely changed, we need to develop Nostr through the traditional capital market, after all, every developer needs to survive.