Chrome is at around 60% of desktop user agents, which is obviously significant but nothing on the scale of what IE was in the 90s. What's more, Chrome's market share plummets massively when you take other devices into account. So comparing Chrome to IE is a little premature when talking about browser monopolies.
Next lets look at the actual technology we're complaining about. ActiveX wasn't just an Internet Explorer-only feature, it was Windows only as well. Furthermore it wasn't the only feature in IE that wasn't supported on other browsers (VBScript, JScript, WebForms†, different support for HTML and CSS, etc). Where as Chrome doesn't diverge from other browsers all that significantly in comparison.
Chromes changes could be compared better to Internet Explorer with regards to how IE4 changed the way frames were used (inc the addition of iframes). This was really annoying as a developer but actually these changes were for the better - particularly the iframe - and eventually those features landed in other browsers. Including Netscape Communicator.
The W3C are pretty glacial at updating their specs so it's often required browsers taking things into their own hands, eg the browser CSS prefixes. Developers would moan about having to add lots of extra junk to their code just to get new features to work but it was the price to pay for having access to new features that hadn't landed in the various web specifications. So as much as they would moan about vendor prefixes, they'd welcome browsers extending the specification.
The above paragraph wasn't all that long ago and the difference between then and now was that Chrome, Firefox and Opera were all at it with IE still playing catch up with regards to compliance; but now the browser market has consolidated where Chrome (read: Blink) has absorbed Opera, IE has largely died off and Firefox is sadly slowly falling out of fashion. So people are paranoid Google might abuse their advantage. However I really cannot see that happen - or at least not with regards to Chrome. Not only is Chrome's market share small compared to IE in the 90s / early 00s but also the web is viewed from a multitude of different devices. As someone who has managed online shops, games and other popular web-based services I can testify that product owners do NOT want to lose business from portable devices. If just because some product owners are so technologically inept that their primary computing device outside of the office is an iPad and/or their business iPhone.
† I think it was called. But basically it was their 90s tech for writing apps that looked like Win Forms.