Well, there's a natural barrier to entry, i.e. it costs millions on dollars and years of time to be able to "crash" your "junk" onto the surface. So it's not like a bunch of hobby rocketeers are throwing away their McDonald's garbage.
By the way, in comparison to the cost and complexity of said "junk", everything you own is cluttering up the Earth. You should really do something about that.
Are you making the argument that anyone with enough money should be able to do whatever they want on the moon?
Giant neon McDonalds billboards visible from everywhere on Earth? Mining with zero restriction on impacts to the surface of the Moon or its atmosphere?
Apparently the HN crowd doesn't stand anyone criticizing a "startup", but I'm asking a legitimate question. So far most of the junk we've launched onto the Moon has been in the name of science and operated by nations. An assault by the Free Market is unprecedented. I'm asking a legitimate question about regulation, and implying a question about whether regulation is warranted.
Keeping the Moon, or Mars, or Venus as pristine as possible is the only way we can study those environments as they exist in their natural condition. Not to mention that we can't detect the presence of life on those worlds if we've contaminated them with life from our own.
If you think this idea is incompatible with exploration, you can take it up with NASA's Office of Planetary Protection:
> Are you making the argument that anyone with enough money should be able to do whatever they want on the moon?
No, I'm making the argument that anyone who invests the time and money into landing on the moon isn't doing it for giggles and the joy of littering.
And let's be real, if we found "space junk" on the moon of an alien planet, we'd be thrilled as heck, so perhaps we're just seeding the moon with artifacts for alien races.
This startup has already crashed two pieces of space junk onto the lunar surface. Can any startup able to get there do whatever they want?