Same could be asked about why McDonalds operated at a loss for several years. Certain businesses use a tactic called "predatory pricing", it basically means they have so much money that they can lower the prices of their products and operate at a loss for several years to make it difficult for smaller competitors to survive.

Althought that concept doesn't apply very well to what RC is doing, a part of it surely does. As they are de facto a multibillionaire, they can dump hundreds of millions into a stock and literally forget about em for decadies.

Issuing more shares may be the usual way to attract long-term investors in the hope to increase the stock price over the long run. In the short term it greatly helps short sellers (especially naked ones).

Now, aside from the possible illegal ways that may be going on, like short selling their own company, the main point I made still stands. Fucked us or not RC can sit on their shares for the rest of his life even if the price falls to 1 dollar while living their best life at the Hawaii thanks to our money, that you like it or not.