Never been a Canon person, for I am now a Sony guy after being a Nikon person for a long time. However, I think it's great that Canon and Nikon are coming out if FF Mirrorless cameras, but it seems to me that they are a little gun shy. By that I mean I think they are afraid of hurting their DSLR lineup and/or having loyal customers go to a competitor. I think once all manufacturers realize FF Mirrorless cameras are the future or at least an important part of the future that they will make the FF Mirrorless cameras less crippled.
One of the reasons I went with Sony is that they are on their 3rd Generation of the A7 series of cameras and I like their roadmap when it comes to improvements on the next generation. Sony seems to listen to complaints that customers have with a few exceptions. I hope Nikon and Canon follow suit by listening to complaints and making improvements on the next generations. Competition benefits the consumer in the long run and gives people more options and/or to stay loyal to their camera manufacturer.
ALL companies need to stop crippling their cameras, but I think that all depends on the market if they do or not. All of the cameras are crippled for various reasons (my opinion and you know what they say about opinions.
) and I am guessing Nikon and Canon cripple the FF mirrorless cameras so they don't offend their loyal DSLR camera customers. Though I could be wrong on that and it might be more of a production issue. I really don't know why Sony cripples their cameras, but it might just be that they are (were) the forerunner in FF Mirrorless for the last 5 years? I think what has hurt all these cameras over the years is the camera market share has shrunk because the average person is more than happy with the smartphone cameras leaving camera manufacturers fighting for the professional market. I can't blame them for being a little gun shy when it comes to FF cameras, for if they make a big blunder and hurt their DSLR lineups then they might be in dire straits financially.