Success in my opinion is not actually about wealth accumulation rather a situation or condition of a fulfiled desire and purpose. It is a continuous process that should never get to stop as long as one is still alive.
Some desires might be academic, business and innovational which many doesn't actually requires accumulation of money rather striving to register a name or so.
Many inventions made in the past, which we are enjoying today were actually from a certain person which many of them started the research but the ending was done after them.
This also means that, success is a condition of time when what is planned is actually achieved. However, success is definitely a continuous process because , the end of one achievement is the beginning of another.
So, it is define as an end to a mean and not means to an end.