I don't have a problem with the change, nor to I intend to switch back to Firefox full time again. Was a loyal user for nearly 4 years after IE8 crippled my XP Pro notebook that had only 2GB of DDR2 RAM, yet after a couple of Full buggy versions (to include several sub-versions), hopped on the Google Train & have never looked back.
Google Chrome, if not burdened down with extensions (what many terms 'add-ons') is a very fast browser, much more so than Firefox, and if one needs resources while performing non-Chrome activities, there's a setting to fix that. Go to Settings, to the bottom of the page click 'Show Advanced Settings', close to the bottom that a pre-checked box that says 'Continue running background apps while Google Chrome is closed' and uncheck that option, then restart the browser. This is the same for all Chromium based browsers, to include Opera, the up & rising Vivaldi, Flash Peak Slimjet (a fast ad-free browser) & others.
Once that's done, then Chrome will no longer hog the RAM on systems that has 4GB or less, or 8GB if one is performing other intensive work, because it won't auto start with the computer. With 16 to 32GB RAM installed, this is a non-issue & nothing to fret over.
As far as being on the legit side of the table, it's those who are stealing digital media who are driving up pricing for honest, paying customers like myself. Viewing pirated media is no different than running a non-genuine OS, as far as personal morals goes, both are wrong. There's plenty of free & legit sites to watch movies, as well as 'trailers', which some believes are better than viewing the final product.
So if enforcing DRM helps consumers to have fewer price increases due to theft, I'm all for it.
As far as it being as opportunity for Firefox, I don't believe so. For starters, Mozilla is in a transition period, and over time, Firefox will become more & more Chrome-like. Some of the extensions have already been removed, and word has it that perhaps the most powerful security extension of any browser in NoScript, as well as their powerful download manager in Down Them All (the latter developer has been very vocal about this) are going away, and the lead developer for DTA stated that he wouldn't make an effort to rework the extension for the upcoming changes. Of which more will be on the way in the next few release cycles.
So I see this in a positive light, that major browsers will have no choice at some point other than follow Google's lead.
Cat