We're no mondragon but I founded a co-op in IT space a few years back and it surprised me how open to the vision the members and customers have been.
I had assumed I'd have to lean more on the capitalistic values of being a co-op, like better rates for our clients, higher quality work, larger likelihood of our long term existence to support our work, more project ownership, so as to make the pitch palatable to clients. Turns out clients like the soft pitch too, of just workers owning the company they work within - I've had several clients make contact initially because they bought the vision over the sales pitch.
I'm trying to think about if I'd trust us more to set up or host openclaw than a VC funded startup or an establishment like Capital One. I think both alternatives would have way more resources at hand, but I'm not sure how that would help outside of hiring pentesters or security researchers. Our model would probably be something FOSS that is keyed per-user, so if we were popular, imo that would be more secure in the end.
The incentives leading to trust is definitely in a co-op's favor, since profit motive isn't our primary incentive - the growth of our members is, which isn't accomplished only through increasing the valuation of the co-op. Members also have total say in how we operate, including veto power, at every level of seniority, so if we started doing something naughty with customer data, someone else in the org could make us stop.
This is our co-op: 508.dev, but I've met a lot of others in the software space since founding it. I think co-ops in general have legs, the only problem is that it's basically impossible to fund them in a way a VC is happy with, so our only capitalization option is loans. So far that hasn't mattered, and that aligns with the goal of sustainable growth anyway.