According to this leaker (who correctly leaked the Persona 3 Remake + The Answer DLC and P5Tactica, indicating some link to Atlus and Sega of Japan):
- Crazy Taxi and Jet Set Radio are receiving remakes (of their original games) AND reboots (live service games)
- the Crazy Taxi reboot is a live service GTA-Online style game with 100 players racing around the map
- The Jet Set Radio reboot is a live service Fortnite style game with open world graffiti and shooting gameplay.
- Both Jet Set Radio and Crazy Taxi are getting non-live service remakes that are full priced and have DLC planned.

I'm devastated hearing about the JSR live service game, in what world does Jet Set Radio need fucking SHOOTING gameplay? It made me going somewhat with the open-world graffiti stuff, since the first two games are essentially that, but with loading screens between areas due to graphical limitations.
I'm also bummed out to hear that the Jet Set Radio game is a remake of the original. Jet Set Radio Future is also a remake of the original Dreamcast game with new graphics and levels, it's sad how Jet Set Radio has never truly gotten a "Jet Set Radio 2" over the last 25 years. Hopefully they at least update the rollerblading controls and copy from JSRF or BRC and add the jet boost.
Crazy Taxi, however, could honestly work with multiplayer game design. The PSP port of the game had a multiplayer mode where you competed with another player to collect the most fare, and if you ran into them, you'd steal their passenger and their fare. That, multiplied by 100 could be a lot of fun. There also seems to be a Cops-and-Robbers mode where you chase down Taxi Drivers judging by the reveal trailer.

I wish we were back in the era where these "live service" games were just additional multiplayer modes to complement a full $50-$60 game with a campaign and offline multiplayer. Fortnite and Genshin succeeding drove the industry into an even worse pit than it was already in when patching unfinished games sold at full price became the norm.