As there's little desire, and even less requirement or even point in having borders on Earth. Earth is our border. The generous nature of a nation is only really required for establishment of embassies, consulates and the like.
This is uncommon. You seem to discount the fact that the land given to the Isreali was forcibly stolen from several countries, and was not a measure of generosity or goodwill on their part, and why there have been problems there ever since as they are surrounded on all sides by hostile nations that would happily see them hounded into extinction.
As every square foot of land is currently "occupied" - bar Antartica(which IIRC has anti-settlement treaties imposed, Article 4 of the Antartica Treaty) then it's unlikely we are able to obtain anything that would be suitable in terms of supporting our long term populational growth. Especially if you factor in Earth's spiraling population and the way they are already begining to run out of arable land capable of producing enough food to support that population, and running out of land to build on in order to house the populations making such resources far to valuable - currently and in the future - to simply donate as a measure of goodwill. For more details on that subject, read the UN roadmap for food security through to 2050.
We can already buy and pay for launch capabailities. Incredibly minor. The base Igor acquired over in Malta, back in June 2015 could also potentially become a facility that gives us our own launch capabilities. I would expect us to eventually obtain our own launch facilities, but I've been doing all my math on having to hire them.
I think you may have the satellite concept backwards. We need to establish ourselves as a nation in order to retain rights over putting it up there in the first place. Or it simply belongs to the launching nation. Or at least that was my understanding.
I've been unable to determine a purpose of the first satellite launched - I'm not entirely sure this has been decided. I haven't put a great deal of research into this, admittedly. I think a comms infrastructure is a good idea - both to compliment the existing internet, and to establish our own private network.