If share dillution were a serious problem then almost any company would not proceed with any project. The reason they do is because even with share dillution ( and possible reverse splits ) the companies get way more value from development of a project than dillution of value over shares negates. Those 300 million shares would still be worth way more individually than if you not build a mine and just offer ourselves for sale. Offers for sale just shorten the time to a profit but that profit is usually much less and not as beneficial. You get paid for doing the work - Such is with all aspects of life.