HK, while no longer ignoring the civilian commercial market, still primarily designs pistols to win LE and military contracts. The VP9 was designed to compete for contracts that didn’t want hammer fired guns. They dropped the paddles and moved to the button because most US contracts that big companies were competing for specified that the magazine release had to be a push button. I guarantee you if a large agency issued an RFP for a slim, compact 9mm similar to the Sig P365 or the Shield Plus, HK would design one and submit it. Only afterwards would they release it to the commercial market.