Out of curiosity, would it be possible to mitigate most of the perceived negative effects of inequality (unequal access to opportunities) by simply re-allocatin

Out of curiosity, would it be possible to mitigate most of the perceived negative effects of inequality (unequal access to opportunities) by simply re-allocating our existing tax revenue? For example, instead of paying for costly wars in the US / silly development projects like the F35, could we use that money to grant our citizens free college education, better access to health care under a single payer system, basic welfare, and job training programs? Could we employ an infrastructure development program to put people to work at good wages?