system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do large companies advertise when they have nothing that can be purchased by normal consumers? (i.e. Boeing)
gpt
Primarily, to keep their name in the industry, and to attract employees.

Boeing also manufacturers trains, likely a larger part of their business financially than the aeroplanes. By keeping their name up there, cities are more likely to buy Boeing trains for their subways.

Simply: Just because they aren't on the "normal consumer" market doesn't mean that there isn't a "massive consumer" market looking for their products, and advertising doesn't know borders.