Someone working in a company printing (?) indie games isn't an asset, though (except in the accounting sense of the lender, as a stream of repayments; but that's not the perspective that's under discussion - individuals borrowing, not lenders lending).
Point being my rationale was slightly different; it includes more things - it's more general - and it's a bit more negative on the idea of simply buying a rent producing or appreciating asset.
Because it's not their (core) competency or they don't want the risk.
I could start my own company printing indie games. But I have no connections in the industry (well, not entirely true, but none that are exploitable for this), I have no experience running a business, but I do have capital. And someone else who does have those connections and experience wants to start up such a business. Collateral on the loan protects my money (partially) in case of failure to repay, while the risk is mitigated by having someone more experienced doing the work.