I think the question of technical possibility answers differently from the question of organizational feasibility. Starlink is optimizing costs because they have a financial incentive to do so. The less each satellite costs, and costs to maintain, the more income they make. I fear incentives are not so direct in governmental orgs. Outside contractors performing most of the work have outsized influence, and incentive to inflate costs. Budgetary decision makers all want to see investment in their own districts.
I think Starlink and cubesats have definitely proven the approach can reduce costs.
The engineering does not seem as challenging to me as figuring out how to get such a policy approved and pushed through all the administrative and decision making layers without watering down and budgetary inflation.