Money may earn one an admission and he may or may not successfully complete the course, but the point is whether it can make him qualified. A person may get an admission to a course, in the management quota, by paying money, in the name of donation, or through some recommendations or by some other dubious means, but he can be said to have gained a qualification only if he can move forward and be successful in life only if he acquires the knowledge and skills that forms the vital part of claiming to be qualified.
I agree with Neelam that we cannot generalize all the students who take an admission by paying money. There can be different reasons for a student in doing so.
Regarding fake certificates, it has been around for a long time and it is nothing unique to India or our system of education. We get to see so many spam posts in ISC too offering fake certificates for different courses. Undetectable replicas of almost everything is available across the world and there are mafias who conduct this as a business. Even when someone is caught with replicas, especially of certificates etc, the originators, very often, escape from being caught. Most of the time, the authorities responsible for checking the certificates choose to put such cases under the carpet for obvious reasons. But once someone is exposed, due to various reasons, the chain is followed and the originators traced. It is an act which is not only a crime against a state but against oneself and the implication it causes is far reaching. Haven't we read about quack doctors and many them having roaring practice too?
That said and done, I doubt whether there is any point in obtaining an admission or buying a certificate if you do not have the interest to learn or the potential to be so qualified because you will never be able to prove yourself. So, take an admission by paying money only if you do not have any other way and you are passionate about joining a particular course. A fake certificate is, I would say, just another piece of paper which has the value of the money you pay for the same only but practically nothing else as a human being.
'Educating the mind without educating the heart is no education at all'.
-Aristotle