When a Group buy is lacking supporters you run to promote a semi/better song that will come only and only if the group buy which is lacking supporters gets completed in time
You may also use the “Shas Method”to push the group buy that is lacking funds faster by coming up with an excuse that the semi/better song will not be hosted if the group buy lacking funds does not finish
Lastly you also have the option to cancel the group buy at the cost of future group buys
Did you see that group buy lacking funds ? They will probably have to rely on The Shas Method