There's. I made some money through launchpad but this is totally depend on your luck and capital. There are some two case here.

1. Launchpad with fairlunch : This launchpad will be distributing proportionally based on the how many capital you have staked/committed it to join in the launchpad.
2. Launchpad with lottery : You must rely upon yourluck to be lucky enough in receiving good

The ROI totally depends on how lucky your are and your capital.

I meant lottery system is far better than fair distribution considering you will able to get more tokens as the only choosen participants who will be able to participate in the launchpad. Fair distribution needs a very big capital to get decent return.