I think that they are very confident in their abilities
It's good that confident projects with a confident team are more likely to succeed than those that work only for profit.
Why do you think so? After all, financial motivation is the most important thing that attracts people to this sphere. Without this, nothing at all.
I think because if a person works only for the sake of money, then when there is a difficult time - he will simply go into another project, which will weaken the company. And ideological people will work under any circumstances.
Much depends on the composition of the development team. Money also plays a role, the more they will gather $, the more experienced they will be able to hire programmers and finish work quickly. In general, we'll see ...