One of our Righties believes this is all part of something called "the splinter strategy" forgetting that by splintering the vote for who should be running for the Republicans, they are guaranteeing a win for Trump. It's silly season, when there are those out there that come up with some wild conspiracy theory to explain why so many Republicans are now running against Trump.
Others, like you have, have come up with more sagacious and probable theories. Money being one, positioning for 2018 being another. Some believe Trump won't make it if indicted so they are jumping in now. I'm not sure about THAT theory. There may be other reasons they are jumping in that I haven't thought of which is why I asked the question.
The perspective has a flaw, we have too many early predictions race to race that end up very much wrong.
In 2020 a far number of commentators suggested Trump was weak for reelection and some 4-5 idiots tried to run against him in the primary to varying degrees of spectacular losses, largely thanks to Republican Party politics ensuring very little fuss or muss from who tried it.
Also in 2020 fairly early on, Biden was no where near the top of the pack, with some 9-10 who stayed in at least into the primary season to various later losses and campaign "suspensions" even with Iowa, New Hampshire and Nevada going poorly for Biden. Sanders even secured 1000+ delegates to Biden's eventual 2600+ delegates.
Going back to 2016 fairly early on, Trump was no where near the top of the pack and the *only* reason Clinton made it past Sanders was insider Democratic Party shenanigans that were profound and obvious enough that the DNC went through a series of reforms largely to save face.
The so called "splinter strategy" is a bit bipartisan and also a bit of a joke, and we have seen a series of career and off / on politicians run for President from both sides of the isle having no prayer in hell of winning but do so for those very reasons. Money making, name on a national scale, and some view of how the opposition is doing.
Trump presents a whole slew of wildcards for 2024 now that everyone knows who he really is. Not unifying, love him or hate him polarizing above all others, and his whole intention with 2024 is to go on a revenge tour having no shits to give over America, our citizens, or our place in the world.
All that said, the way too early predictions are DeSantis has an all uphill battle and the others who are running are there almost entirely for their own future ends. But as we've noted, just about anything can happen. Just like it did in 2016 when everyone was just sure Hillary would win... right up to the point of her spectacular loss and subsequent 'everyone else is at fault' tour.
You really sure 2024 is your "silly season," you sleeping in 2020 and 2016?