China has been dumping massive amounts of resources in this for at least 20 years, this (Making chips domestically with local tech) has been a long term goal for a very long time. The chip ban is relatively recent. IF it had an effect it was merely expediting a process that was going to happen regardless. China was NEVER going to be content importing Western chips or western machines to make chips indefinitely.
2019 is pretty recent. But it doesn't matter if the ban is 2000 or 2025. China was going to try and get the machines through subterfuge, industrial espionage, reverse engineering or novel engineering. They were always going to get a domestic chip production industry, its a matter of national security.
