Gates played hardball with vendors and business customers to kill the competition. Unlike Apple today, MS didn't have a superior product then to gain market share. Gates did have the ear of a lot of corporate customers who bought a lot of PCs and servers based on promises made by Gates. He could also leverage the popularity of MS-DOS on existing PCs which was used to maintain compatibility and ease the transition. (Even today's Windows PCs have limited MS-DOS compatibility and MS-DOS ran a lot of programs on Windows PCs and servers until suitable native Windows replacements were delivered.) He also told them a lot of big fat lies to keep them on the hook until he could deliver something worth buying. (Under Gates, MS was notorious for delivering products years late and then taking years more to fix bugs.) That won't work in today's phone market due to the maturity of competing products. I also doubt that the EU would let Apple or Google get away with the stuff Microsoft did back then. (The US is a lame duck when it comes to prosecuting large companies like MS and Canada just follows its lead.)
So where does that leave MS? Buying defunct phone companies to get smartphone technology? Gates must be shaking his head in disbelief. He would have watched Nokia crash and burn and picked through the rubble for ideas to steal. When he ran MS it had a policy of developing everything internally, ignoring standards and pummelling any competitors that got in his way. That included some huge companies such as IBM. The list of software and hardware companies with dominant market share that were destroyed by MS under Gates is staggering. The irony is that MS is now on the receiving end from two companies that it once almost destroyed, called Apple and IBM.