People often like ground-mounted solar setups 'cause they're flexible, you can tilt 'em just right, and they're easy to fix. They're great for big projects where there's plenty of land. Still, not every solar company puts them in. There are good reasons for that, which helps explain why rooftop solar is still way more popular.

One big thing is that they're harder to get started with. You gotta check out the land real good, test the soil, and get some engineering done. Stuff like how strong the ground is, how high the water is, and how steep the land is all matters for the base. Unlike rooftops where the structure is already there, ground mounts need more planning, time, and know-how, which not all installers have.

Finding land can also be a pain. Ground-mounted solar needs lots of open space, ideally flat and with no shade. In cities, that kind of land can be hard to find or super expensive. Plus, you might need permits and approvals, which means more paperwork. A lot of solar companies that work on houses like rooftop projects 'cause they don't have to worry about owning land.

Cost-wise, ground mounts usually need more materials and building. Things like the bases, electrical cables, and fences all add to the price. Even if companies make good ground-mount stuff to help, it can still cost more than putting solar on a roof.

Another thing is that ground-mount projects take longer. The weather can mess with the foundation, and working with other builders can slow things down. For solar companies that are used to quick rooftop jobs, these longer projects might not be a good fit.

Some installers also have trouble with equipment and workers. Ground mounts need different skills than rooftops, like using big machines and putting stuff together on-site. Companies that mostly train people for rooftops might just stick with what they know instead of getting new tools and training.

Then there's what kind of customers they're going after. A lot of solar companies focus on rooftops 'cause there's always demand and it's easier to find customers. Ground-mounted systems are more common for businesses, farms, or big utility projects, which means different customers and sales. Even if suppliers support all kinds of mounting options, not every installer wants to work with those kinds of projects.

A lot of the time, it's not that ground mounts are too hard, but that the company is just trying to match the projects with what they're good at, who they're trying to sell to, and what they want to do in the long run.