We have approximately 300,000 free hospital beds in the US.
If 5 to 10 percent of cases require ICU (5 percent on average, 10 percent in Italy) then when we get to 6 million infected, we will certainly be out of hospital beds.
Right now we have thousands od reported infections. But following this
https://medium.com/@tomaspueyo/coronavirus-act-today-or-people-will-die-f4d3d9cd99ca we most likely have way, way more, and even if we all lock ourselves in our homes indefinitely the reported numbers will continue to rise dramatically day by day.
And both the number of cases, and number of available beds, are distributed unevenly across the US.
Statistically it's a near certainty that we already have people who will die preventable deaths because there wasn't an available hospital bed to treat them.