I'm sorry to say your proposed rules are a farce.
You claim:
If the network operator slowed the speed below that which the consumer bought it would be commercially unreasonable and therefore prohibited. If a network operator blocked access to lawful content it would violate our no-blocking rule and be commercially unreasonable and therefore be doubly prohibited.
Except you must have no concept of the weasel-words that ISPs use. You cannot buy bandwidth in the US. You buy "up-to" bandwidth. 1 kbps is still "up to" 1 Gbps. A two-tiered, have-and-have-not interent is absolutely allowed in your proposal.
ISPs say: