FCC fronting carriers $4.5B for 10Mbps speeds in rural areas, T-Mobile's 5Mbps offer shot down

The FCC will be funding Verizon, AT&T, T-Mobile and Sprint to the tune of $4.53 billion to expand their wireless networks in sparsely populated rural areas, and ensure 10Mbps minimum download speeds. The move is part of its Mobility Fund Phase II auction, and the dough will be distributed to carriers over a 10-year period. The full statement of the FCC is worth reading, be it only for the jab pointed at T-Mobile, which argued for much lower minimum speeds requirement:

We are not persuaded that the minimum baseline performance requirement for median data speeds should be reduced ...