Whether the infra is complex or not isn't going to make a huge difference to whether your product makes money. Some of the highest-revenue-generating products I have seen were tire fires under the hood. One product had multiple people working 24 hours a day to constantly hose down the multiple levels of problems that the incredibly poor design and terrible infrastructure created. But through the toil of those people in the backend, the product made hundreds of millions a year.

Whether or not you use complex technology, it matters more whether it's well designed and well operated. If it's not, you will end up with a fire either way. It's just that "simple" fires are a lot easier to put out than "complex" ones. (this is literally true; a lot of fires should not be put out with water)