They are not the one personally buying it but rather those participants that want to get profit by sacrificing the trust score of the account that they purchased in exchange for the weekly payment for signature campaign.
There’s nothing for them to gain on buying account themselves and do posting one by one while they can just paid participants by regular rate for the campaign.
I disagree. Some of their accounts were definitely bought by them and given to their employees who would advertise for them in return for salaries on a regular basis and there's a good amount of evidence to prove that.
1xbit have the resources to execute such elaborate plans though they clearly failed pretty badly within this forum.