I have been using Pi-Hole for some time & find it works really well on a Raspberry B or above, so if you want something useful for a drawer filler to do - give it a go
The global companies have better finance teams than the national governments put together, Each country needs to work on its own tax laws, or have a "NATO" (for example) style agreement to deal with global companies - tax wise, then they can be rinsed for what they owe