@Olivier5,
You may prove correct. Bloomberg certainly has a steep hill to climb to be acceptable to the left wing of the Democrat Party. However, depending on what unfolds in the state primaries ahead, he is likely to emerge as the only contender potentially able to beat Trump in the November election, As the election draws near that consideration is likely to grow in importance to the leaders of the party. They are , after all, the ones who were so surprised by Sander's popularity in the 2016 Primary and Hillary's subsequent defeat by Trump. This past year, having judged the current crop of Democrat candidates largely unelectable, they resurrected the hapless Joe Biden as a "winnable" candidate, only to see him falter and fail in the ongoing political contest. Their fear of their new left and their appetite for victory haven't abated: without Biden they have only Bloomberg.
I agree this will bring the internal divide within the Democrat party into very sharp focus. The results are, as yet unclear, however history confirms that as the Primary nears completion the virtues of a more likely winner become more significant.
The 1972 Campaign of Democrat Senator McGovern may be instructive. In the wake of Robert Kennedy's assassination and Ted Kennedy's Chappaquiddick incident the establishment of the Democrat Party was leaderless. McGovern, then a relatively far left wing Democrat ran a Bernie-like campaign, gathering a majority of state delegates and, finally the party nomination. The result was the most lopsided Republican victory (Nixon) in over a generation. I believe the memory of that loss has not yet disappeared among Democrat leaders, and that was the motivation for their failed resurrection of Joe Biden and may well lead them to endorse and choose Mike Bloomberg.