Bernie has failed and it is over. He was not popular enough, and could not convince people he can beat Trump. Voters supporting his ideas went for Biden in every state.
At the same time, he would have won Texas, CA by 20, Mass, Minn, and Maine if Warren had done yesterday what the other two did. Despite Bernie's flaws, the triple endorsement for Biden and the inaction of Warren was probably the knockout blow for the last chance to stop climate change without mass death. To explain briefly - since she got no delegates but ~12% in Texas and California, those were votes that go into the void, votes that would have given Bernie frontrunner status. And her votes in the 3 M states, while not wasted, deny Bernie the tag of being the winner.