A basic income only serves to maintain the status quo for those at the top. It's a release valve on political pressure to bring fundamental changes to the system to better serve the lower classes.
In the US, one can look how the Section 8 housing program serves a similar pressure-relief function in the housing rental market. By giving essentially free rent to those who cannot afford current market rate rents, it relieves political pressure to reform housing policies that keep rental rates high while also inflating rents and property values, heavily distorting the rental market. I think one can easily view the Section 8 program more as welfare program benefiting property owners rather than lower class renters.
A basic income would have a similar effect on the general cost of living, inflating values and benefiting the wealthy. Again, like the Section 8 program, this will be a welfare program benefiting the wealthy because this basic wage will simply flow upward and concentrate at the highest economic rungs.
People love Uber because it's disruptive and it's better than taxis. But, the future is not Uber. The future is any car owner becoming a taxi. I have a ride; you need a ride. Why shouldn't this be? There can be services that track reputations of both drivers and passengers and travel arrangements can be taken care of through a central service as well. Taxi monopolies are archaic and need to die. Uber is a transitional service but it is certainly not the final answer to the current way of things.