“The cloud” is out, but I never suggested to use that anyway.
For file transfers, throughput beats latency. Even if you’re only transmitting 1MB at a time, a 100mbit/s uplink with 100ms of latency wins a 1mbit/s uplink with 1ms latency. That said, I haven’t studied MaidSafe’s network quality rating algorithm either.
The way I understand it, the pro will get a higher chance to receive PUT requests. And of course, when the pro’s drives are all filled up, further PUTs will have to go to other people (unless the pro expands).
One thing that’s for certain is that the algorithm will reward fast, stable vaults. As I explained above, this means more traffic for people with more bandwidth in core locations. Whether that’s enough to make a profit over bandwidth costs depends on the ratio of Safecoins you get for a GET vs. Safecoins you have to pay for a PUT and how that relates to fiat. We’ll just have to see.
I agree, I’m a bit concerned about old junk data filling up vaults. However, I would also argue that if you start farming early, you have a high chance of getting bootstrap data that applications on the network use all the time (resource lists, start pages, configuration data…).