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How does investment into a private company work?
Each company has X shares valued at $Y/share. When deals like "Dragon's Den" in Canada and Britain or "Shark Tank" in the US are done, this is where the company is issuing shares valued at $z total to the investor so that the company has the funds to do whatever it was that they came to the show to get funding to do, though some deals may be loans or royalties instead of equity in the company. The total value of the shares may include intangible assets of course but part of the point is that the company is doing an "equity financing" where the company continues to operate. The shareholders of the company have their stake which may be rewarded when the company is acquired or starts paying dividends but that is a call for the management of the company to make. While there is a cash infusion into the company, usually there is more being done as the Dragon or Shark can also bring contacts and expertise to the company to help it grow. If the investor provides the entrepreneur with introductions or offers suggestions on corporate strategy this is more than just buying shares in the company. If you look at the updates that exist on "Dragon's Den" or "Shark Tank" at least in North America I've seen, you will see how there are more than a few non-monetary contributions that the Dragon or Shark can provide.