I do not understand your question.

On p2p file-sharing networks, you can only download as fast as people sharing can give you and as many of them as you can connect to. However, there are some scam softwares that limit downloads to prompt you to buy their pro or commercial versions of the software. If you ever see that, ignore them, there will be an equivalent or usually far superior programs out there that is totally free and does not limit your speeds.

For example, Acquisition, a MacOSX shareware program would limit your download speeds after an hour. pfft ... first gnutella program I ever heard of that was designed to do that. The program developer is very commercially greedy, selfish and dishonest. And so are those that work for any program that attempts to limit your speeds in the hope you will buy their pro software.