It's because solar gets cheaper faster than wind does. The experience rate is higher.
Contrasting that with solar, where any surface area receiving direct sunlight doesn't prevent other adjacent areas from also capturing solar.
For that reason, there is very little reason to build small wind turbines, even if there wasn't a down-stream loss of power from putting too many close together.
But as I write that, I guess it becomes more clear to me that a personal interest in installing the technology makes one pay more attention to it elsewhere, and promote more conversations about it that get others involved.