The benefit for the company is to obtain financing for the project and also to create a good base of investors who, if the project goes well, will probably be long term investors. In addition to what I have said, there are also many venture capital companies that invest even before there is a presale, they do it to have a privileged position in that project, and they usually invest large amounts of money, which makes the team of the project has enough money and focuses only on developing the product.