The amount of people and money needed to start this operation and get it going successfully would be ridiculous. Over time they may rise slightly but there is to many of them being pumped in to make decent profit.
Lobster's wont rise. Now days there are too many bots available and people in F2P that are desperate for money, they will sell lowest and this plan will fail. Just my 2 cent's but I certainly won't be investing any money into them.
This won't work simply for the masses of GP required for the buyout of the already available stock; let alone what new lobsters are entering the economy.
Sell what you've bought before you lose even more money, or simply begin to flip them on a daily basis.
i dont think they will raise anymore, since the amount of botters most likely wont decrease. Also people don't really listen when you tell them to sell for max
you'd need like 100b+ wealth as a group to buy this out.. if not more too much of a stock, too many hoarders, and too many coming into game daily. item wouldnt even see more then a 10% rise ;/