> Capitalism is predicated on the ability to loan out money.
If that's true, then it's fundamentally broken (assuming interest bearing loans of course). You will never have a sustainable economic system that is based on interest bearing loans, we see it all the time with people waiting for the next crash to happen.
> No debt means no credit for new businesses
Not true. There are moral alternatives. If you want to start a business, pitch your idea to investors who are willing to put in money in exchange for a portion of the company. If it works out, everyone profits, otherwise, everyone takes risk equally and the holder of the idea is not left with crippling debt. This is just and fair.
> No mortgages.
Mortgages artificially increase property prices, continuing the cycle. There are alternatives that don't involve interest. You see it all the time in the auto industry where they have 0% loans. Do the same with houses. We already did that historically in Muslim nations.
> Governments can't issue bonds to raise capital.
Raise capital in an ethical way. The government can invest in its society and businesses for example. Obviously there are other solutions but that's for the specialists.
> Society would literally collapse if we "do away with interest bearing and yielding assets."
Except it didn't when people followed the teachings of their religion (specifically Islam). Great empires were built without interest. It's possible, it's just that it isn't as easy or perhaps convenient to those who stand to benefit the most from interest.