I don't need to explain "how having to repay a loan won’t affect a business’ profit margin" ... because I have never said otherwise: it's an Aunt Sally entirely of your own making.
The facts are these:
* Spurs have made a profit of £149m - after interest and tax - across the last four published sets of annual accounts. This includes much of period during which we've been spending on the new stadium and new training centre.
* Our income rose by 46% in the last of those accounts compared to the previous year.
By the time the next accounts are published our income will have risen substantially again. And by the time we reach the end of next season our income will likely breach the £400m barrier ... and we have a substantially lower wage bill than at least 5 other clubs in the Prem.
And yet, according to you, Spurs will struggle to both repay debts and invest in the team