Economists have a well accepted fact which is that for hundreds of years, the ratio of income from wages to income from capital has been about 70:30. That is 70% of total global income is received as wages by workers and 30% of total global income is received as rent from capital (see Zuletta 2008, An empirical note on factor shares, journal of international trade and economic development, 17(3) 379-90). This ratio may well change with the growth of AI for the following reasons.

Capital comprises assets such as equipment, houses, land, patents and copyrights where the owner of the assets can potentially receive rent. Suppose that AI is itself capital. As more AI is created, the human owners of the new AI will own more capital and will have more potential rent income. If the AI becomes able to fully substitute for human work then wages will fall to the cost of the machine substitutes. It then follows that the ratio would gradually change from 70:30 to 50:50 and then to 30:70 and perhaps 10:90 until the raio reaches very small amount of wages income : a very large amount from capital income. 

As to what the implications of this change are for the global economy I am not sure! But it is clear the change will be significant and arguably gradual. 

Note that the argument above assumes that robots will not be legal persons capable of owning assets. That assumption could be incorrect.