It's pretty easy to circumvent all those checks if you're doing normal-ish things (like doing a single series of searches to prepare to purchase a single flight) and their detection doesn't ban a large fraction of non-bot customers. Those companies might sell bot detection, but it only works against the poorly coded bots and legitimately abusive accounts (sometimes) if you don't turn the false positive dial way up.
replyThey just use a residential proxy and direct their traffic through a user cellphone with Facebook or Instagram installed, or from an LG television.
replyWait until they discover agents are a sign of having a larger disposable income.
replyThen it will be like the higher percent you pay for the Titanium Plus Card holders, and complaints will vanish.
Agent use might indicate large disposable income, but agents locking up inventory that other passengers with large disposable incomes could have purchased is a net negative unless the agent-using passengers actually keep the seats.
replyAs plenty of others in this thread have pointed out, agents tend to book first and then cancel later if they don't get post-approval from their user. That ruins the experience for all the other potential passengers who could have purchased those tickets and it's clearly better from a business standpoint to prioritize the other potential passengers over the jackasses who care so little about their seats they couldn't even be bothered to book the seats themselves.