Ask HN: Why can't we send something to the moon?

I started a project in 2017 called `to-the-moon`: https://github.com/aklos/to-the-moon

Obviously, it's a joke. But I keep thinking, what if we could actually get a small propulsion device into Earth orbit? All it would need is a solar panel and a fart, and we could set it on a trajectory to collide with the moon. Even if it'd take 10 years to get there, it'd still be really cool.

There are services that launch small satellites into orbit for a fee (usually something like $30k-$60k per 1kg payload).

Why isn't this feasible?