You can thank Uri Geller for that. In September I put together a list of the first 251 Pokémon cards ordered by how many days had passed since their last release: www.elitefourum.com/t/the-first-251-pokemon-ordered-by-last-japanese-tcg-release/29281/1 - Kadabra is at the top because of an ongoing lawsuit which very recently ended (www.polygon.com/2020/11/30/21726492/pokemon-nintendo-lawsuit-uri-geller-kadabra-apology). Abra is an unfortunate victim of this because there’s little need to print a low-power Pokémon who can no longer evolve.
I’m sure going forward we’ll start to see more Abra and Kadabra cards printed, but it depends on how reluctant Nintendo are to do so - it wouldn’t surprise me if the Japanese name gets changed due to the similarities: ユンゲラー (Yungera - Kadabra) vs. ユリゲラー (Yurigera - Uri Geller).