When someone went on a rant about how humans aren ' t naturally monogamous and polygamous relationships are the only real ones . <| sep |> Thanks , you are asking many of the right questions . I think a major driving factor is corporate FoMO fear of missing out on the next big thing . They are all running around like their hair is on fire . Apple is making something like 90 % of all the profits in cell phones and tablets and everyone else is trying to figure out what is next so they can make an end run around Apple . Notice Apple is about the only big player not talking . When Steve Job ' s introduced the iPhone he didn ' t have a big marketing effort 2 to 5 years in advance and introduce an SDK to try and figure out what people could do with it . But here we have Microsoft ' s CEO said that Hololens will be big in 5 years hintshololensis 5 yearsaway 20159 . Microsoft has very smart people working on Hololens and spending a lot of money likely much more than ML but even that does not guarantee success . It does not matter if there is not a large market for what results whether it is due to cost , form factor , usabilityutility , etc . The main thing ML adds to the equation is focus planes where things appear to focus at different depths . But this requires more expensive optics , more expensive displays , and much more processing power . This all has a negative impact on size , weight , and cost . ML looks like they are planning on a cord going to a beltpocket computer system . There are other ways to implement a focus effect by say using IR light to measure the focus of the eye and then generate an image with blur according it won ' t be perfect but neither are ML focus planes . I ' m not sure how seriously Microsoft is taking ML . There are many more ways for ML to fail than succeed . ML is not exactly quite about what they are doing and people have been circulating in and more importantly out of the company . So things are going to leak out . FOV and arcminutespixel are simple math . Take the FOV in degrees and multiply by 60 and you have arcminutes . While 1 arcmpixel is seen what people want , they can probably get away with 1 . 5 before most people will notices so this is a 1 . 5 X fudge factor . My guess is that Hololens is going to a 1080 p display from 720 p and will spend the extra resolution on FOV . Note though when you increase the FOV you not only want more pixels but the cost of optics increases generally more than linearly with FOV . DLP are approaching their physical limits on pixel size , even if they could make a smaller pixel , diffraction becomes an extremely serious problem . LCOS can make their pixels mirrors smaller but the because they work by generating an electric field that spreads you really can ' t control an individual pixel . Making the displays bigger drives up the cost nonlinearly and with LCOS you have issues with display uniformity . I ' m not as familiar with the physical limits of OLEDs but they are way behind on cost several times with respect to DLP and LCOS and brightness which is likely an increasing problem with higher resolution OLEDs output fairly broad spectrum light which does not work well with diffractive and holographic light guides ODG which uses OLED uses a halfmirror combiner rather than a waveguide . An argument could be made that ML where hoping to use FSD BECAUSE all the rational display techniques can ' t solve simultaneously a wide FOV with a good angular resolution .