2. Ohtani could prove to be the missing piece and the start of a dynasty
Ohtani has to be sick of losing and considering that heavily in his free agency decision. While the money plays a huge factor, Ohtani wants a chance to play meaningful games in October. Baseball fans are being robbed of seeing one of the league's most popular players in the most important games of the season.
Atlanta has a lone championship in 2021 since the start of this version of the team. One thing that has held Atlanta back each of the two postseasons is another elite pitcher and a weak back end of the lineup. Atlanta's offense simply needs to show up and be better when the postseason comes.
However, from Ohtani's perspective, you have a team with what appears to be an endless postseason window on the cusp of greatness. If Ohtani can come in and be the missing piece in beating the Phillies and making trips to the World Series, it is legacy-defining and doesn't hurt the wallet at all.
Ohtani needs a chance to play in the postseason and long term that chance is clearly best with the Atlanta Braves. Add in the chance (when healthy) to be the missing piece in a great rotation and lineup and Ohtani clearly has the right idea.