I am soon in level 50 in Risingstar and I am thinking about how to get to 1 million starbits - to get the possibilty to make a mission and get 10 000 starbits today.
Two ways....

1. Earn and save

Today I get about 10 000 starbits every week. Lets say I can make it better and also I earn more in higher levels. Lets say I can get 20 000 every week avarage.
I need 50 weeks to get to 1 million.

After about one year (50 weeks) I will have
A Million Card
1 million staked in game
0 in wallet

2. Loan

I make a loan from a friend. At 1 000 000 starbits. I will be able to do the mission every day but I also need to pay back - of course
That mission takes 30 minutes and 80 %. So it will be easy to do it every day.
It will take 100 days to get 1 000 000 starbits in this missions. Then I can pay back the loan.
BUT that is not everything I can to with my daily recources. I can still do a lot of other missions too. As I calculate above I can earn 20 000 starbits in week with ordinary missions.
Maybe the millionaire mission take some of my resources so lets say I only do 15 000 starbits a week (avarage),
After 100 (14 weeks)days I will have
A Million Card (the loan is payback)
1 million staked in the game
14*15 000 starbits in my wallet = about 200 000

I can still pay my friend some starbits as interest. And anyway get the card and the money faster then above.
(Still it is a risk that they change rules and so on. Just see this is a theoreticly way)

All because the HUGE ROI with this card.

Dont drink and drive
Dont take a loan to invest
Dont listen to a man that love mathematic more than investments.

But I think this was pretty funny to calculate.

Keep on playing !