i rarely used taxis when i lived in ibiza but i don't have a high opinion of the ones i did get into. i actually saw the application form for san jose taxi drivers (the last mayor there owned a taxi) and the first question was not
can you drive a car?
or have you got a license?
or do you have even a tenuous grasp of the geography of the island (I shouldn't have to be giving directions from ibiza or san an to san jose as i've had to do in the past)
but
do you speak catalan?
there was a certain amount of protectionism of their own also, as anyone who doesn't speak catalan can attest
Driving out of San Jose yesterday, Jaki spotted a taxi on the taxi rank. That's a first, she said, and I pointed out that the driver wasn't ...
ibizavilla.blogspot.com
and as for uber, they may have been allowed to operate now, but in the interests of fair competition, they are only allowed to take bookings for 30 minutes after the 'call.' not immediately like taxis.
in answer to the op, i've no idea if the situation has improved.