These attacks are complicated and resource intensive, with tactics and countermeasures constantly evolving. Attacks need to happen in large coordinated swarms in order to get past defenses, and arranging dozens or hundreds of different drones to all attack deep into enemy territory at the same time without being detected beforehand is challenging. The successful strikes make the news, but there are many failed attacks that get less coverage.

Target selection is difficult as well. High value targets aren't always easy to identify and sequencing is important. It took Ukraine years to develop the technology and strategy to have consistent success. They were smart about targeting air defense systems early on which has led to a virtuous cycle where successful attacks make future attacks more likely to succeed. Despite the rampant corruption, Russia has plenty of smart people on their side as well and they are constantly adapting and finding effective ways to counter specific tactics.