NO,It wont...
People will buy premium if they loves your site...And you are not going to provide the full bandwidth
If you give 50-100 kbps speed,People will hate it.Now,pls dont compare your site with Extabit/Netload etc..Those sites are established.But you are not [Sorry,Not being offensive,But its true,I love ML though]...Don't you think to compete with the top filehosts you need good word of mouth?You need to be free users friendly.There were some sites who only thought about sales,they acted like cashwhores after few month they were vanished!!!Just grow your site,lets enlarge the megaload community and then think about cash.