Generally speaking, Softbank’s model is to manipulate private capital markets as a way of drowning out competitors with cash. For instance, there were several ‘rounds’ of WeWork investment where Softbank was buying more shares at higher valuations. WeWork ostensibly became more valuable because Son said it was more valuable, and bought shares for higher prices. And since there was no public market for these shares, the pricing of the shares was totally arbitrary. WeWork then used this cash to underprice competitors in the co-working space market, hoping to be able to profit later once it had a strong market position in real estate subletting or ancillary businesses.
This is of course Amazon’s model, which underpriced competitors in retail and eventually came to control the whole market. And Amazon has spawned a host of imitators, including WeWork. It has also reshaped venture investing. The goal of Son, and increasingly most large financiers in private equity and venture capital, is to find big markets and then dump capital into one player in such a market who can underprice until he becomes the dominant remaining actor. In this manner, financiers can help kill all competition, with the idea of profiting later on via the surviving monopoly.
Instead of “pump and dump” it’s “pump and take over the market”. In the case of WeWork, there wasn’t a market.