What if the same companies that sell you oranges could give some of those same oranges to the homeless?A lot of (mostly urban) businesses do, in fact, give food to help feed the homeless. In downtown San Diego, one or more Starbucks locations gives away leftover items to a women's services center to help provide a free coffee and pastry breakfast to indigent women. Presumably they get a write off for it, plus they only serve fresh goods to their customers.
Or use a portion of their profits to (without deceit) send them to countries in need?
According to Diet for a Small Planet, the vast majority of starvation is caused by internal political strife and sometimes food aid gets sold off to put money in the pockets of corrupt politicians or simply rots on the docks because they don't want it delivered to the hungry masses who are often de facto a populace they are internally at war with.
Furthermore, when Western foods are delivered to other countries, locals develop a desire for a lifestyle that is economically out of their reach and frequently not sustainable locally. In other words, they hunger for foods that cannot be grown locally, at least not without ruining the local environment.
There have been all kinds of problems caused in the past by food aid, such as women being given just enough baby formula for their baby that their own natural milk production dried up, then the free aid stopped. I think the intent was to create a larger market for baby formula, but these women could not afford to buy baby formula. As a result, babies died.
On the one hand, help for the homeless can be life saving in the short run. On the other hand, in the long run, the homeless need the same things any middle class or wealthy person needs: The ability to solve their own problems and support themselves. Too much focus on treating homeless individuals like helpless charity cases can actively undermine the possibility of them getting their act together. It's a hard balance to strike. International aid is typically even more fucked up, from what I gather.
I know you mean well, but the road to hell is paved with good intentions. Your suggestion has all kinds of potential to pave a road to hell.