There's not a whole lot of point to acquiring Boost licensed software. Of course, they could always acquire me and pay me handsomely!
"For my friends everything, for my enemies the law" software license.
I can't imagine that it wouldn't be. If a company has explicit written permission from the copyright owner granting permission to use that copyright, then they can use it.
Also, it wouldn't be a special license. If you wanted to do a "For my friends everything, for my enemies the law" thing, you'd just set it as all rights reserved and add special note encouraging people to ask for permission to use it.
Plus, copyright enforcement typically goes in the other direction. It's not about who you can sue, it's about who you can't. Licenses are just a way of specifying who you cannot sue. If you want everybody to use your project but don't want to bother with a license, you can make it all rights reserved (the legal default) and just not sue anybody. You could sue them if you wanted to (which is why nobody would ever use your code: because of the risk that you change your mind and sue them), but nobody is forcing you to.
Or a hybrid, sell them, but refuse to sell to certain entities and discount up to 100% to others based on how much you like them.
The reason they invented the standard licences is to avoid this cost and effort. Do you really want to write a 200 page legal contract for every user for software you’re giving away for free?
It would be neat to have this licese codified (Like we have MIT, GPL, etc), with the proper incentives to "ask for open source access, if I lile you, you might get it". And, of course, a "contract" that gave licensees the open source benefits.
I like you @WalterBright you can use any of my stuff even if you get acquired