But overall this oped is misplaced. Running the leanest possible operation shouldn't be Wikipedia's focus at this stage in its lifecycle, it's improving the quality of its content.
Back in 2005 Wikipedia had 438k articles and the focus was expanding the reach of its content to cover all topics; today the article count is 5.4 million it's quality that matters more. You can't improve quality just based on crowd-sourcing alone (see: Yelp, Reddit, etc), and the bigger it's gotten the more of a target it's become by disinformation activists.
This attitude on budgets over value strikes me as a classic engineer's POV. The OP is nostalgic about a time when the site was run by a single guy in his basement, but could 1 guy handle the assault of an army of political zealots or Russian hackers? DDoS attacks? Fundraising? Wikipedia is arguably one of the most coveted truth sources the world over, protecting and improving its content is more important than an optimal cost-to-profit ratio.
If the OP has specifics, by all means, share them, but this kind of generalized fearmongering about budgets isn't spectacularly useful, IMHO.