ALL Christians should be able to walk in all the gifts Jesus manifested, it is the same "gift", the gift of Holy Spirit that is the source, we must grow in gifting, we have not because we ask not.
blessings
1 Corinthians 12:15-26
15 If the foot should say, “Because I am not a hand, I do not belong to the body”, that would not make it any less a part of the body. 16 And if the ear should say, “Because I am not an eye, I do not belong to the body”, that would not make it any less a part of the body. 17 If the whole body were an eye, where would be the sense of hearing? If the whole body were an ear, where would be the sense of smell? 18 But as it is, God arranged the members in the body, each one of them, as he chose. 19 If all were a single member, where would the body be? 20 As it is, there are many parts,[a] yet one body.
21 The eye cannot say to the hand, “I have no need of you”, nor again the head to the feet, “I have no need of you.” 22 On the contrary, the parts of the body that seem to be weaker are indispensable, 23 and on those parts of the body that we think less honourable we bestow the greater honour, and our unpresentable parts are treated with greater modesty, 24 which our more presentable parts do not require. But God has so composed the body, giving greater honour to the part that lacked it, 25 that there may be no division in the body, but that the members may have the same care for one another. 26 If one member suffers, all suffer together; if one member is honoured, all rejoice together.
Not all should or will operate in the same giftings, or will hold all of the giftings. Each person is different and should appreciate their special giftings that God has bestowed upon them.
Sorry if im misunderstanding you, but when you say ALL Christians should be able to walk in ALL the giftings, it could either mean two things
One being that all Christians have giftings avalible to them and there will be diversity in the body. But all giftings will be present
Or as it was taught to me, all Christians should be able to do all miracles/have all giftings.