How does "Letters to the Winner", convey a variety of ideas about change?

In Letters to the Winner, Les Murray conveys a variety of change in many ways. It conveys the idea that some changes that are perceived to be positive to some may actually be negative to others. In the poem, the persona's neighbour, a divorced man who leads a lonely and tedious life, has just "won the special lottery" and has now been bombarded with letters from others trying to leech some of his winnings. This …showed first 75 words of 818 total…

…showed last 75 words of 818 total…want to know him because of his wealth and not anything else. There is a cumulative listing of how people ask for money, and the letters just keep piling up. In the end, the reader wonders why anyone would think the persona's neighbour has won anything at all. The "positive" change is now a negative change, which shows how some changes that are perceived to be positive to some may actually be negative to others.