This is a niche topic and I'm not sure this is the right community. Let's say we start to move on to a society less focused on capital. Not perfect but on the way there. There are still companies and there is an overall economy running around small businesses. How would a small business get started without access to "capital"? What are the alternatives?
You are going to need tools and other resources to start a company and that is capital. So the question should propably be how to get those. In Italy the cooperatives run combined funds to start new cooperatives with. If you get money from that you have to pay money back in. That works. Then there is the option of spin outs. So you have a large company maybe even specializing in starting new companies and let them go. A lot of universities, start up hubs and so forth do that right now. If that is owned by a non capitalist owner, that might work pretty well. Obviously government grants are an option too. Then you also have cooperative banking, which might offer some less capitalist deals. Also stuff like presales might be an option, like you see with crowdfunding.
If there was ever a good reason for pre sales I think that's that. The problem I see with start up hubs college based is that they are limited in terms of help and mostly lead to companies falling into VCs hands. At least in my country. I think the most "anarchist" way of doing it may be just crowdsourcing mostly because it's the potential clients that actually fund the venture. I think it's probably a pain mostly because it turns into a marketing campaign but at least the funding is honest. No VCs, no angel investment, no quarterly projections. A company could actually aim to be sustainable instead of infinite growth based.