if nobody has income there's nobody to pay for the product
the singularity is a retarded elitist fantasy, it will never work that way
sure, maybe some people will be put out of work, once again, by some of this tech but there will be new things to do with all that free labor
the real problem is the money squeezes the labor market deliberately and until we can save again it's not just machines replacing humans it's overall general impoverishment as no progress happens because nobody can save and thus fund speculative, developmental work