Since gamble site kindda risky, you can invest on your own for example if you have shop to handle, you can use it to expand your shop globally so you may have alternate currency. And if you have more, you can spend for help advertising your shop !
So far this is the suggestion that is convincing for me. But I would say that 1 bitcoin is not enough.
Especially for plans like this, it is really not enough.
only for 3rd world country 1 bitcoin would fulfill your advertising needs,in 1st world country it will need more than 5 bitcoin,because everything was expensive even printing a banners,but building website for a shop would be a good idea
All of countries have difference on standards of living. Yes 1 btc would be enough on expanding your business on 3rd world countries but on higher standard countries it wouldnt be enough as you stated and i agree unto that. Yes having a business is a good investment even more if you put your effort and attention to that then i would be a nice income generator.