In absolute terms, yes we are seeing advancements in tech/medicine and the like and that will always help more and more people, but in more relative economic terms it's questionable whether the gap between poorer nations and richer ones is actually closing, because there is economic evidence that the gap is actually widening:
> Net Resource Transfers (NRT) for all developing countries have been mostly large and negative since the early 1980s, indicating sustained and significant outflows from the developing world (see graph below)
Some countries progressing faster though, (China being one of them).