The reason due to which these sites are used because they had previous authority and links pointing to them, and the site can be redirected easily so that it passes the website you wish to link.
As a proof that PBN is effective, it has caught the attention of Google and it has attempted to take users away from this. But even by this Google’s attempt, it’s almost impossible to take out this technique away from people. Furthermore, this method stands out from others because all the websites which people use as back-links are regarded by Google as authoritative and which are already popular with Google’s algorithm. PBN’s will be effective as long as the long links are a major ranking factor as by Google.
If you want to buy PBN links instead of creating them yourself, you need to purchase them from a reputable source. So always be attentive as there are several PBN providers who are not reputable and will sell you the bad links that even can damage your site.
So that’s why it’s always important to check the PBN provider before sending them to your company website. It can be very costly, especially for someone who doesn’t have a lot of money for investment.