Use other services where necessary, and sparingly. Use only what's functionally necessary, and diversify. Encourage your employer or organization to avoid vendor lock. Don't ever meet with salespeople, stay in charge of your websites and infrastructure. Find a highly disagreeable technical engineer to tell you what you can get away with; you probably don't need the scale of the things CloudFlare, AWS, et al impose by default.
AI right now can do all of that for you; pay for the best initially, have it do deep searches that meet what you need, and find appropriate contractors and services. Drop down to the plus tier after you get what you need initially, if the $200+ versions are too steep, but you can absolutely afford one month to plan an overhaul that doesn't empty your wallet.
Mandate open standards and bake in flexibility to your organization; pivot frequently and aggressively away from companies and services that don't meet your principles or standards.
Wherever possible use self hosting, decentralized protocols, open standards, FOSS software, and pay for expertise over the massive overkill "but wait, there's more!" the conglomerators offer. Their economies of scale serve to consolidate unearned and unaccountable power, often in cooperation with very shady players.
Yeah, tragedy of the commons, this is why we can't have nice things, because it's hard, and complex, and actual evil people exist who will absolutely ddos sites and exploit every and any opportunity to grift people out of their money. Cloudflare is a well marketed bundle of solutions for real problems, but it's definitely not the only solution.
It's up to you to what extent you compromise on principles - with AI it's becoming much easier to find acceptable alternatives without having extensive domain expertise. Normal search engines are almost completely captured by SEO and big market players, and we have a window of opportunity to use new AI search to find things that defy the status quo. The window will probably close sometime in the near future, but until then, take full advantage and position yourself to not be subject to companies or industries that shouldn't be taking it upon themselves to gatekeep the internet.
Also, yell at your representatives about getting a digital bill of rights, protecting the open internet, breaking apart monopolies, and cultivating what's best for the internet, and the world.
We have to stop pissing away the good for the convenience of the cheap.
/soapbox