Getting from orbit to the moon is many magnitudes more difficult than getting from orbit back to earth.

If we were able to create such a vessel, bringing it back to earth would be so much more efficient.

The highest orbits are about 23,000 miles above our planet. With the moon being 238,900 miles away on average. And unfortunately we are nowhere near being able to design such a craft. Things in orbit are not just sitting at a consistent speed that we could vacuum up by moving slightly faster.