Of course the type of abundance is open for debate. I suppose I should have clarified further as to the type...positive or negative abundance...even then the very definition of positive or negative abundance would be open to the same interpretation. I can't say I was speaking of wealth (noting your reference to "rich"), in my mind I was thinking of food, clothing, shelter...necessities most would need to survive. In any case, there are many various ways one cold be deemed "rich".
So, to answer your question...no, abundance is not always a blessing but it depends on what you do with said abundance - what you choose to do can be the actual blessing. I was simply using the term blessing because of the original post used the reference from the Bible.