Could this happen?

There are 2.1 billion Christians in the world. And there are 143 million orphans in the world (according to UNICEF - although if you look at other sources the number varies between 50 - 200 million depending on how you describe an orphan. Living with family but parents are gone, one parent gone, both parents gone, parents alive but placed them in an orphanage, etc). So, if my math is correct the numbers work out like this: if 14% of the Christians in the world adopt 1 orphan then every orphan would have a home.
I’m realistic. I get that you can’t just sign up to adopt an orphan and I get that while one child is being placed with a family another is taking his place in the orphanage. And I know that the underling causes for orphans will not go away just because they each got a home. But there is a reason that God calls us to care for the orphans over 40 time in the Bible.