wrootApple did just that and almost single handedly killed Flash and pushed the web to more browser based standards, and also set the standard for the mobile web we all enjoy today. Its also hyper competitive, so to stay on top of the trends movement needs to be made on applications. If Sharepoint doesn't work, and Microsoft hasn't addressed it, users move to a competing product like Google Docs that allows them to collaborate and also gives users the ability to use their smartphones to manage it as well. I'm not saying its better, but there are viable alternatives that will replace a product like Sharepoint if it is too slow to innovate.
In IE's case, if a business still has ActiveX apps that they still haven't updated, I'm sorry, but Microsoft shouldn't be beholden to their needs and keep the rest of their user base held back and insecure by supporting and bundling it. I know Microsoft really wants to move forward from IE and leave it behind and also innovates on their own products like Sharepoint. They understand where the web is going. One good way of moving it forward is to abandon legacy apps like IE and not support them. Honestly its a miracle IE is still bundled with Windows 10, and frankly confusing for some end users that IE and Edge are on there.