In conditions like now, only Barcelona and Real Madrid have the opportunity to continue to be in the title race because if you look at Atletico Madrid, they are further behind. Barcelona's victory against Osasuna made their steps a little smoother because now they are three points ahead of Real Madrid who are in second place. With the remaining matches, Barcelona will definitely try to do everything to maintain consistency in achieving victory.
But it's just 6 points different from Real Madrid and 8 from Barcelona, and the league still has more games to be played before the end of the season and a lot can still happen before then. So what makes you think ATM have lost oppor of still continuing in the title race except for Real Madrid and Barcelona? Perhaps if ATM can just go on focus on winning their games avoid a loss or draw they could make an offset on the table with points and outrun the two sides which to you are the only teams still with much potential in racing for the title