Difficult market fit - similar to how many small businesses don’t have the budget for a full accountant, lots of churches and residential people don’t have the budget for lots of computing or computer support.
With that said, I think it’s a very valuable service and I’m sure you can find people who could pay for it. I work at a small business, and I know that many businesses still struggle greatly with managing their network and point of sale technology. If you incorporated some of that into your company in addition to the regular computer work I doubt you’d ever run out of demand.