Is taking gifts from MR for writing a particular brand drug is a form of corruption?

Is taking gifts from MR for writing a particular brand drug is a form of corruption ?

It is a blatant form of corruption. But people don’t accept it or may be don’t want to accept.

If doctors were not taking those gifts then those drugs could have been sold to patients with lower prices.

Although I’m not involved in doing this as it is corruption according to current ethical principles, the same principles somehow don’t apply to any other profession and any other situation, even if at the present time, healthcare is legally a business and patient is a consumer.