My homeowners insurance has doubled since we bought our house 4 years ago...... But so has its market value. Yeah, one could argue that nothing can happen to the dirt it sits on, even if the place burns to the ground. But lots have all doubled to tripled in price as well in that same time frame.
Also, building material and labor costs have all gone through the roof. Good luck trying finding anyone worthwhile, to do any type of construction work. Roofing, remodeling, etc. Name it and you'll be in for a long wait.
I waited almost 4 months just to have a 8' X 12' storage shed built. They built and painted the entire thing in just 2 days, start to finish. But they were backed up that far.
Also, around here, 25 years ago the bulk of the new homes built were all around the 1,400 to 1,600 sq. ft. range. Today builders don't want to "waste" lots building homes that size. Now they're all 2,600 sq. ft. plus. Most of them with huge RV and boat deep garages that are 2,000 sq. ft. or larger, just by themselves.
Homeowners insurance cost simply reflect all of this.