Yeah, because enterprise pricing is so nefarious. It's fine if having to negotiate a contract intimidates you, but there's nothing sinister in it. It's not possible to offer a simple tiered pricing plan that can accommodate every enterprise customer and their usage requirements. Maybe companies A and B have the same number of users, but B consumes 10x the bandwidth. Should B be paying more than A?
Companies can't stay in business if it costs more to service the business than the revenues coming in.