I know I used to be on a 1MB shared connection for where I was living at. I know how painful this can be.
Basically it is CHEAPER for the makers to push the updates (GTA V has a update BTW you all didn't hear) and support the systems via ONLINE
then it is with IN PERSON or OVER THE PHONE. So in this modern age YES the only way you will be able to play these MODERN games is
being online. I had to manage MY GAMING by everytime I went to bed, setting the game to 'load' while I slept so it would download patches and so on
(for example all my Steam games). Many times it be DAYS of doing that before I could play my games.
Sorry the ONLY answer is GET better Internet. There are Microwave shots, there is Satellite, CableTV, Cell Phone, etc. available to reach every spot even the remotest spots, but it depends on how you manage it and how much your willing to invest. I seen the Satellite now is comparable to CableTV cost, and is very viable except in deep low Valley (high mountains) blocking the Satellite in the southern sky.