Implementation of db would require 1 year if cz do it alone(the code must be rewritten from scratch), 9k usd x 12 month is big money to personal but not to company or btc whale.
Sorry but you are very far from the truth. There are at least 5 people who can give you BBR running on the latest Bytecoin or Monero code for no more than 5k-10k usd.