[erwanl]

The user is not necessarily the customer, or the buyer.

In a company, the buyer or customer may be a manager but the user the members of his team.

In a consumer product, the buyer or customer may be a middle-aged man but the user his 12 years old daughter.

Words have meanings, and randomly inverting them will only cause more confusion. When you sell a product it's important to know who is the custmomer and who is the user. If they're not the same person they will have different goals and needs, and it is important to understand them.

[hawleyal]

Most definitely.

Youtube has video uploaders, commenters, raters.

Games have players, coaches, referees, bots.

Forums have admins, moderators, posters, subscribers, lurkers.

Torrents have seeders, leechers.

Sure, Amazon has customers mostly, and some advertisers.

New terms are ubiquitous from convention, not from reasoning.